How to find out that Office is installed from Store
Start Excel and open a blank workbook.
Click the File tab in the top left corner and select Account from the menu on the left.
If your Office is installed from Store, it will be indicated in the About Excel section after the build number:
Uninstall Ultimate Suite via Control Panel
Close all Microsoft Excel files.
Go to Start and open Control Panel.
Click on Programs:
Pick the Uninstall a program option:
You will see a list of all installed programs. Find the add-in you want to uninstall and double-click it.
Click Yes in the dialog window:
Install the latest version of Ultimate Suite
As soon as Ultimate Suite is uninstalled, please go to our Latest versions page, download and setup the edition of Ultimate Suite you use. After this, run Excel and check whether the problem with the Ablebits tabs is fixed.
No Ablebits tabs in the Excel ribbon
Ablebits tabs are present but not clickable
Ultimate Suite troubleshooting