Ugh…. Getting a message that I don’t have enough cloud space in Fresco

I have been reading through all of the posted regarding this error, but nothing is working for me. Out of 5GB, I'm only using 6505.4 MB. I reinstalled Fresco, shut off my iPad, rebooted, and still getting this message.

Here are my iPad specs:

ipad mini (5th generation)

ipadOS - 18.6.2

internal disk space - 21GB

Any help would be appreciated,

Joan