Minichat Bans My Account for "Age Mismatch" With No Actual Wrong Info

I had been using the Minichat app without any issues for a while. About 5–6 months ago, while opening the app with my younger sibling next to me, I suddenly got a warning saying something like "age doesn't match, you've been banned." After this warning, my access to my account was completely cut off — I can't get into the app, and I can't even log out of the existing account.
When I set up my account, I entered my own real age into the app; I didn't provide incorrect or incomplete age information. Despite this, I find it unjust to receive such a warning and be permanently banned just because my sibling happened to be next to me. My account was registered through Google under the name "Hüseyin dede."
I am requesting that Minichat's management review my account, lift this mistakenly applied age ban, and reopen my account under the name "Hüseyin dede." I'm willing to complete an ID or age verification if necessary.