I started having this problem as well. At first, I started getting errors when my existing reminder was supposed to trigger. The error was "Unfortunately, a reminder you created <name> does not appear to have been sent to the space, <space name> at 1:00 PM on date for an unknown reason." I was unable to retrieve my reminder by using @Rememory list. I had to remove the app and re-add it to stop the error from appearing. I tried to create a new recurring reminder using @Rememory create but I have not been able to (it just doesn't do anything and there's no error). I can create a one-time reminder but then I can't delete it - which is to say that I cannot click the box to delete the reminder when I use @Rememory list.
A workaround I found is to type out the reminder rules instead of using @Rememory create but I hope this gets resolved (as well as the deletion issue). Example of it typed out: remind this space Test at 1:00 pm every weekday for 2 years