Unlocking GE levels

[Donald the Great 57]

I'm a founder of my guild but cannot figure out how to unlock levels 2-4 in the GE. I know this must be an old issue but I can't find anything that helps me out.

 

[Pickleweasel]

I don't know if a mobile version is different, but on p.c. at least, click the gold star(s) in the upper-left of the GE area if you want to unlock the levels.