Critical error message received. Unable to update.

Hi! I was using the free version of IdeaPush and it had been working well. But it just recently stopped working. If you go to the link above, it will show this error:

There has been a critical error on this website.

But I am also unable to update. When I try I get this error:

Update failed: Update package not available.

Here are the details you request on your support page in the plug-in:

PHP Version:?7.4.33
WordPress Version:?6.5.5
Plugin Version:?8.58
Is Pro User:?YES
Current Theme:?Agama Pro Child
Website address:?https://www.theduchy.com

Little help?

Cheers!

The page I need help with: [log in to see the link]