Update:
I just checked and my bank had all capital letters (uppercase for you youngsters) anyway I edited it that way on ikenvapes site and it worked. Yipee. Oh I mean Yee Haw. LOL
Yes, for any AVS mismatch declines definitely make sure you're entering your address exactly how it is setup with your financial institution. So... if your address is like this with your bank... "1 mAiN sTrEeT" then that is how you should have it entered in your profile for IkenVape.