Any sequence for activating the plugin?

Hi there. I was using the plugin facing some difficulties.

I defined the constant in wp-config.php before uploading the plugin files into wp-content/plugins folder. Then I activated the plugin in the WP plugins page and checked the constants were set and correct in the setting page. However, when I tried to upload files through media “add new”, it would not upload to Azure storage account.

Then I tried to remove the constant and re-entered the values in setting page directly. The files could be uploaded to Azure normally.

I am hosting some websites and want to maintain the constant in wp-config.php instead of entering directly in setting page. Is there any sequence involved?