Patreon login gets admin role on website

I made a gift membership for my serverside support team to have them look into the problem with some patreons getting into an endless login loop on my wordpress site. The support team had no problems with logging in both in incognito mode and normal mode.
What they realized is that the were granted admin access when logging in with their patreon account. And even more disturbing, the were connected to the sites admin username.
Any idea what this is all about?