My Outlook Calendar wont allow me to add or make changes

When I went to the MS Store, it showed several calendar programs. The first one on the top left says "Installed." How do I know which one to use? One of my complaints is that currently I get either a blank window, the Classic Outlook, or the 'New' Outlook, depending on how I try to launch the program. How do I tell them apart? Shouldn't there be at least a version number or other identifying feature so that one doesn't corrupt files by downloading the wrong Ap'?

After some time and effort, I found the version number for the installed 'New' Outlook. It is the same as the version you listed (1.2024.1107.100). Shouldn't it be different from the buggy version? Since when are programs changed without the version number reflecting that it is an update that has fixed a problem? No wonder there are issues!

OK, when I opened the 'New' Outlook, I was able to post an event without downloading the ap', although the history doesn't show anything being pushed onto my system this evening while I wasn't at the computer.

However, that doesn't address the problem I also complained about that some events, including US Holidays, are being displayed over 2 days instead of just one day as it should. The product is STILL buggy.

Hello Clyde Spencer1

The old version number in question is 1.2024.1023.300. You can download this new version shown in the update screenshot to see if you can use Calendar Events properly.

Best Regards,

Simon.W - MSFT | Microsoft Community Support Specialist

Could I have a link please - it's not coming up when I search in the store - my version is  Microsoft Outlook Version 1.2024.1107.100 (Production).

UPDATED

I found it and saw mine has been dated - and it seems to be working now - thanks.