Hello DKM1224,
I understand you are having issues with the New Teams.
To resolve this issue, kindly confirm if this is happening on a Windows PC.
The "New" Teams app is a Universal Windows Platform (UWP) app, and it stores its cache in a different location compared to the previous version of Teams.
The cache for the "New" Teams UWP app is located at C:\Users\user.name\AppData\Local\Packages\MSTeams_8wekyb3d8bbwe. You can clear the cache by deleting this folder with Teams UWP closed.
Please replace user.name with the actual username of the account on the computer where you want to clear the cache.
On a Mac, to clear the cache for the new client:
Press Command + Space and enter Terminal.
Enter the following commands:
rm -rf ~/Library/Group Containers/UBF8T346G9.com.microsoft.teams
rm -rf ~/Library/Containers/com.microsoft.teams2
I hope this helps.
Warm Regards,
Taiwo