I cannot connect to others in Game Center

Greetings Tomst37,

Reach out to the app developer directly, as they're best equipped to help troubleshoot features of their app not working. The following article shows how to contact an app developer: How to contact an app developer - Apple Support

"Contact the developer of an iOS, iPadOS, or watchOS app

1. Open the App Store on your iPhone or iPad.
2. Search for the app, then tap it. If you can't find it, tap the account button  or your photo at the top of the screen, tap Purchased, tap "Not on this [device]," then tap the app.
3. The app's product page appears. Scroll to the Ratings & Reviews section, then tap App Support. If you don't see App Support, make sure that you're signed in with the correct Apple ID."

Kind regards.

Hi there Tomst37,

If you are having issues adding friends in Game Center, first ensure you are following these steps from Play with friends in Game Center on iPhone:

Add friends

1. Go to Settings  > Game Center > [your profile] > Friends.

2. Tap Add Friends, then enter their phone number or Apple ID, or tap  to invite someone in your Contacts list.

3. Recipients can respond to friend requests in any of the following ways:

• In Messages, tap the link.

• In a supported game, tap the Game Center profile picture, tap Friends, then tap Friend Requests.

• In the App Store, tap  or your profile picture at the top right, tap Game Center, then tap Friend Requests.

In your list of friends, tap a friend to see games they recently played and their achievements.

In iOS 16.1 or later, you can also add a friend in the Contacts  app. Open their contact card, then tap Add Friend in Game Center. After your friend accepts the request, you can view their Game Center profile from their contact card.

If this continues after following those steps, please provide more details so we can assist further.

Cheers!