Within limits means your save isn't too big, it's just the servers.

Just spam the save button, and eventually it'll let you save and say "Backup saved Successfully". The servers are just backed up lol.

ya probably server issue

try deleting some levels

your data is too huge to save

there is no fix, just the servers are having a hard time keeping up with the saving, should work eventually but who knows when

delete all ur levels in editor and try again

I keep having that same issue
It like bans me or something off the website and then after a few days it unblocks me
So im not sure what causes it but if its like my case it should just fix it self

hmm i think the game had a brain fart "save size is within limits" i think it means that the file you are trying to save is within the limits of the storage or some thing so idk why you cant save your data