diff --git a/tests/e2e/constants/API_TEST_CONSTANTS.ts b/tests/e2e/constants/API_TEST_CONSTANTS.ts
index b2e295bfdf6..7e0cf53e727 100644
--- a/tests/e2e/constants/API_TEST_CONSTANTS.ts
+++ b/tests/e2e/constants/API_TEST_CONSTANTS.ts
@@ -18,9 +18,14 @@ export enum KubernetesCommandLineTool {
 export const SUPPORTED_DEVFILE_REGISTRIES: {
 	INBUILT_APPLICATION_DEVFILE_REGISTRY_URL: () => string;
 	GIT_HUB_CHE_DEVFILE_REGISTRY_URL: string;
+	TS_GIT_API_AUTH_TOKEN: string;
 } = {
 	INBUILT_APPLICATION_DEVFILE_REGISTRY_URL: (): string => `${BASE_TEST_CONSTANTS.TS_SELENIUM_BASE_URL}/devfile-registry/devfiles/`,
-	GIT_HUB_CHE_DEVFILE_REGISTRY_URL: 'https://api.github.com/repos/eclipse-che/che-devfile-registry/contents/devfiles/'
+	GIT_HUB_CHE_DEVFILE_REGISTRY_URL: 'https://api.github.com/repos/eclipse-che/che-devfile-registry/contents/devfiles/',
+	/**
+	 * gitHub has a rate limit for unauthorized requests to GitHub API. We can prevent this problems using authorization token
+	 */
+	TS_GIT_API_AUTH_TOKEN: process.env.TS_GIT_API_AUTH_TOKEN || ''
 };
 export const API_TEST_CONSTANTS: {
 	TS_API_TEST_DEV_WORKSPACE_LIST: string | undefined;
diff --git a/tests/e2e/constants/BASE_TEST_CONSTANTS.ts b/tests/e2e/constants/BASE_TEST_CONSTANTS.ts
index 585fd80b7da..60065fb133b 100644
--- a/tests/e2e/constants/BASE_TEST_CONSTANTS.ts
+++ b/tests/e2e/constants/BASE_TEST_CONSTANTS.ts
@@ -32,6 +32,7 @@ export const BASE_TEST_CONSTANTS: {
 	TS_SELENIUM_REQUEST_INTERCEPTOR: boolean;
 	TS_SELENIUM_RESPONSE_INTERCEPTOR: boolean;
 	TESTING_APPLICATION_NAME: () => string;
+	TEST_NAMESPACE: string;
 } = {
 	/**
 	 * base URL of the application which should be checked
@@ -53,15 +54,24 @@ export const BASE_TEST_CONSTANTS: {
 	 */
 	TEST_ENVIRONMENT: process.env.TEST_ENVIRONMENT || '',
 
+	/**
+	 * openshift project or k8s namespace which is used by test
+	 */
+	TEST_NAMESPACE: process.env.TEST_NAMESPACE || '',
+
 	/**
 	 * application name (DevSpaces or Che)
 	 */
 	TESTING_APPLICATION_NAME: (): string => {
-		return BASE_TEST_CONSTANTS.TS_SELENIUM_BASE_URL.includes('devspaces')
-			? 'devspaces'
-			: BASE_TEST_CONSTANTS.TS_SELENIUM_BASE_URL.includes('che')
-			? 'che'
-			: 'default';
+		if (BASE_TEST_CONSTANTS.TEST_NAMESPACE.length > 0) {
+			return BASE_TEST_CONSTANTS.TEST_NAMESPACE;
+		} else if (BASE_TEST_CONSTANTS.TS_SELENIUM_BASE_URL.includes('devspaces')) {
+			return 'admin-devspaces';
+		} else if (BASE_TEST_CONSTANTS.TS_SELENIUM_BASE_URL.includes('che')) {
+			return 'che';
+		} else {
+			return 'admin-che';
+		}
 	},
 
 	/**
diff --git a/tests/e2e/utils/DevfilesRegistryHelper.ts b/tests/e2e/utils/DevfilesRegistryHelper.ts
index ba912bba4c1..74834be0c1d 100644
--- a/tests/e2e/utils/DevfilesRegistryHelper.ts
+++ b/tests/e2e/utils/DevfilesRegistryHelper.ts
@@ -12,7 +12,7 @@ import { Logger } from './Logger';
 import YAML from 'yaml';
 import { API_TEST_CONSTANTS, SUPPORTED_DEVFILE_REGISTRIES } from '../constants/API_TEST_CONSTANTS';
 import { injectable } from 'inversify';
-import { BASE_TEST_CONSTANTS } from '../constants/BASE_TEST_CONSTANTS';
+import { BASE_TEST_CONSTANTS, Platform } from '../constants/BASE_TEST_CONSTANTS';
 
 @injectable()
 export class DevfilesRegistryHelper {
@@ -64,11 +64,12 @@ export class DevfilesRegistryHelper {
 		} else if (isInbuilt) {
 			{
 				const content: any[any] = await this.getInbuiltDevfilesRegistryContent(sampleNamePatterns);
+				const devfileRegistryPrefix: string =
+					BASE_TEST_CONSTANTS.TS_PLATFORM === Platform.OPENSHIFT
+						? BASE_TEST_CONSTANTS.TS_SELENIUM_BASE_URL + '/devfile-registry'
+						: '';
 				for (const sample of content) {
-					const linkToDevWorkspaceYaml: any =
-						BASE_TEST_CONSTANTS.TS_SELENIUM_BASE_URL +
-						'/devfile-registry' +
-						sample.links.devWorkspaces['che-incubator/che-code/latest'];
+					const linkToDevWorkspaceYaml: any = `${devfileRegistryPrefix}${sample.links.devWorkspaces['che-incubator/che-code/latest']}`;
 					devfileSamples.push({
 						name: sample.displayName,
 						devWorkspaceConfigurationString: await this.getContent(linkToDevWorkspaceYaml)
@@ -97,9 +98,19 @@ export class DevfilesRegistryHelper {
 		return content;
 	}
 
+	// eslint-disable-next-line @typescript-eslint/no-unused-vars
 	private async getContent(url: string, headers?: object): Promise<AxiosResponse> {
 		Logger.trace(`${url}`);
-
+		if (SUPPORTED_DEVFILE_REGISTRIES.TS_GIT_API_AUTH_TOKEN.length !== 0) {
+			/**
+			 * if we use - https://api.github.com/repos/eclipse-che/che-devfile-registry/contents/devfiles/ URL
+			 * for generating devfiles we can get a problem with rate limits to GitHub API,
+			 * but we can pass auth. token for increase the limit and avoiding problems
+			 */
+			headers = {
+				headers: { Authorization: SUPPORTED_DEVFILE_REGISTRIES.TS_GIT_API_AUTH_TOKEN }
+			};
+		}
 		let response: AxiosResponse | undefined;
 		try {
 			response = await axios.get(url, headers);
diff --git a/tests/e2e/utils/KubernetesCommandLineToolsExecutor.ts b/tests/e2e/utils/KubernetesCommandLineToolsExecutor.ts
index 49046af21bc..03a73ef41d8 100644
--- a/tests/e2e/utils/KubernetesCommandLineToolsExecutor.ts
+++ b/tests/e2e/utils/KubernetesCommandLineToolsExecutor.ts
@@ -51,7 +51,7 @@ export class KubernetesCommandLineToolsExecutor implements IKubernetesCommandLin
 			if (applicationName === 'default') {
 				this._namespace = applicationName;
 			} else {
-				this._namespace = OAUTH_CONSTANTS.TS_SELENIUM_OCP_USERNAME + '-' + applicationName;
+				this._namespace = OAUTH_CONSTANTS.TS_SELENIUM_OCP_USERNAME + applicationName;
 			}
 		}
 		return this._namespace;