Question Login with specific player ID

I'm making a support tool, and it would be nice for the support to login into the user's account to see if everything is fine, so if I have the player ID, is there a way to login with it?

Another idea is to copy a player's content into a support account, but the 3rd party logins that I'm using (google and apple) doesn't work on the editor, and login anonymously creates a new account every time, so I'm out of ideas how can I login with a specific account after cleared all the player prefs, so I'm open to new suggestions too.

 

The problem:
* The user opens a ticket saying something is wrong
* Support goes into the Unity Dashboard, finds what is wrong, and fixes.
* How to test if the fix does in fact fix the problem?

Solution 1 (not desired):
* Go into the user's account and validate if everything is working
Solution's problem:
* There is no way of logging in into that account
* It is obviously not desired, we should have means to do it without interfering with the user's account.

Solution 2 (desired):
* Copy all the content from the user's account
* Dump it into a support account
Solution's problem:
* Sometimes we need to clear all the local stored data (cache) so all the data comes from the server
* The only method available for login in the Unity Editor is anonymously, and if the check needs all the player prefs to be deleted, so you can't have the support account's ID to dump the copy of the user content.