To clarify, have you tried clearing the cache and cookies as mentioned by colleague Monica above? If you have and you're continuing to have issues, would you mind providing a screenshot? This way, I can take a more in-depth look at what's going on and assist further.
I'll be sure to keep an eye out for your reply and look forward to chatting with you soon.
Deleted and unassigned shift quickbook from desktop
Hey there, atmoscoffeeshop.
Thanks for joining this thread and for trying the troubleshooting steps mentioned above. I'd be glad to point you in the right direction so the block will stay assigned in QuickBooks Time.
Since the steps mentioned didn't do the trick, I recommend reaching out to a member of the QuickBooks Time Support Team. Agents have the necessary tools to take a closer look to determine what's causing the shift to become unassigned.