Hello! I’m a big newb, so bear with me.

I hit 20 territory and wanted to expand so as to assign new broodmothers. I learned until level 40, you have to fight for additional territory slots. I’ve won 2 so far by fighting other dens of lower stat levels (177 or less, as my stats are only at 177).
My problem is that lower stat dens no longer give me the option to attack for territory after only 2 wins. The only options given are Skills and Experience. However, it will allow me to fight higher stat dens for territory (which of course is pointless, because I’ll lose). Why is this happening?

I went over this guide... https://lioden.fandom.com/wiki/Expanding_your_territory
...but I can’t find an explanation through it for why this is happening (the dens I’m trying to attack are over 2 territory size and it still won’t give me the option).

TIA for your help! 😊