Congratulations on breaking the Calendar and Reminders iCloud sync for anyone still running Mojave and iOS 12.x!
It looks like rebooting my phone, disabling sync on both my Mac and my phone, killing the associated apps on both, and then restarting them forced a sync. Hopefully it will continue to sync for a while before it breaks again, but since I know that they switched to a completely different system for Reminders in Catalina and iOS 13, I’m not hopeful; Apple and legacy are two words that simply don’t go together.
…and I had to do it all on my iPad, too.
Markdown formatting and simple HTML accepted.
Sometimes you have to double-click to enter text in the form (interaction between Isso and Bootstrap?). Tab is more reliable.