text changes

	public function getSection(): ?string {

		$betaGroupName = $this->config->getSystemValue("beta_group_name");

		if (empty($betaGroupName)) {

			$this->logger->error('Beta group name is not configured.', ['app' => 'ecloud-accounts']);

			$this->logger->warning('Beta group name is not set in config.php', ['app' => 'ecloud-accounts']);

			return null;

		}

		$groupExists = $this->groupManager->groupExists($betaGroupName);

		if (! $groupExists) {

			$this->logger->error('Beta group is not available.', ['app' => 'ecloud-accounts']);

			$this->logger->warning('Beta group does not exist!', ['app' => 'ecloud-accounts']);

			return null;

		}

		return 'beta-user';