HI ! yes i used GC for purchased item, so today i got that email.
Thats your problem. Dont use gift cards to make purhcase on Amazon. There are dozens of forums posts of people having the accounts deleted because they used GC's.
If you use GCs, insta redeem insta order and hope 4 the best.
Dont redeem too many cards back2back and don't order other gift cards with them.
Also try to diversify with buying here and there something with your CC, makes your account more legit
My account was also blocked and i was asked to send a fax containing informatipn yo confirm my order to their fax number which i did yesterday, but i am yet to receive a response what can i do?