SAVE TO CLOUD DOCUMENTS GREYED OUT

Hello, I have been experiencing this issue for a while now and it's been really bothering me. When I try to save my designs, the option "Save to Cloud Documents" is greyed out. I am connected to the internet, there is plenty of storage left in my cloud, my app is up to date and I have the auto update turned on. The only thing that works so far is to quit and re-open the app, and while it doesn't take much time it quickly became a hassle because it happens quite a lot. Does this happen to anyone else? I'd appreciate the help, thanks!