Remove and Re-Add Live Chat to Teams
If are having issues with not receiving live chats correctly, you can remove then re-add live chat from your Microsoft Teams account.
1. First remove the Live Chat App from the Team
Select your 3 horizontal dots next to your team, then choose the apps tab. Choose to delete the app here. This will completely remove the app from this particular team. You can do this for each Team you're having issues with.
2. Remove the app from your personal workspace
Now you can add the app back to your teams tab and your personal account. First add the tab:
Select the Tab then sign in to Microsoft:
Then add the personal app: