Upgrading issue!

Baboss187

I took my 4* quake to rank 4 and got it up to level 7 before accidentally backing out. So I went back on it to continue levelling up but it showed I had no t4bc?? T3sc & alpha cat were still there but took away my t4bc and it says I'm rank 3. How is this even possible?
2 days ago I had no arena payout and now this!