i dont know if this a bug but if you search my tag Toasted#ezz in E5:A2 it says ive hit diamond but on the left it said peak rating is platinum 3
@Toastedstix did you change your name?
I have the exact same issue. My Riot ID is Flowridah#7373 and I peaked imm2 100+ rr. Tracker says imm1 96 rr. I got imm2 in my act rank ingame. Tracker seems to not have counted my rankup game after the 96rr.
However, when using the discord bot it accurately shows imm2. Just the website and app is wrong.