Using a desktop calendar on my pc

Hi

I run Windows 10 and M365 on my pc.

Before upgrading to M365 I had on my desktop a calendar app called Cal4Desktop which worked really well. It was linked to my Outlook email/calendar details.

Since I started to use M365 the app has stopped working. I have spoken to the company who produce the app and they say that the 32bit version that I downloaded works on their machines ( it doesn't work on mine )

Is there a different calendar app I can use that will sync with Outlook.

I have added an attachment which shows what the app looks like. It is 'frozen' in place to a date last week and I can't get it to work at all.

Can anyone help please.

Thanks.