Todo not opening on my MacBook Pro

Hello, newbie to the forum here.  I’m not finding it very intuitive at the moment.

I posted the following message (somewhere?) about 10 days ago and have had no responses.

Could someone please direct me to a source of advice and help?

”

Hello, a newbie member here.

I thought that I'd successfully posted the following message on 16 January 2024 on the Todo hub?  

“avon_7, boy am I glad you posted this.  Thanks a lot.

I've found the online version you mentioned.

I think it may be better than the one I had on my MacBook Pro.

There are helpful tips/speech bubbles in blue.

I'm a long time user of ToDo and before that, Wunderlist.

Two weeks ago I updated to 2.112 and of course the app would not open.

I'm running Catalina 10.15.7 on my trusty 9 year old MacBook Pro.

Is this the end of the line as far getting the latest app/or update 2.112 to work on my MacBook Pro?

Will I have to use the online version?

ToDo working fine of course on my iPhone SE first generation and iPad Pro MPF12B/A   PeterToDo“

I've had no replies, well apparently I've had 3 but can't figure out how to access them on this forum.

Can somebody help please?

Should I post again?  But where?

Thanks,  Peter”

thanks,  Peter