Do you have any status about the issue ? Also reported via FB12145974, and I've just created FB13410524. Get the complete feedback created by user NikoloziApps here

Yes indeed I'm able to connect to AppStoreConnect, but Xcode can't. Hope you get some info about the issue very soon!

The expired WDRC certificate is no more created by Xcode Beta 3. So this is a problem with previous versions of Xcode. Removing manually the expired certificate and then opening the project with the new Xcode Beta 3 does not recreate the invalid certificate. So we can presume the expired certificate is not linked to the main issue. And the "No App Store Connect access for the team" problem still remains.