The level changes itself

I play on i3. on the map it shows i3 as I enter dungeon i3. and in clan members it shows i1, when I change the level to i2, then i3 shows OK (in clan members), and when I start some activity it changes to i1 again. Am I playing on i3 or i1? But probably i1 because the legends I get are very weak. How to fix it?