You may need to update the Salestim App Packages. Here are the few steps to do so.
1. Download the latest packages
Download these packages locally and do not unzip them:
2. Upload to your app catalog
Launch Microsoft Teams (Desktop or Web Browser) and open the app catalog.
Click on "Built for... Your Company Name"
3. Update the package
Click on the three dots in the app card
Select the corresponding package and click "Open"