I still remember my shopeepay get banned because i use 2 different phone to pay for 1 bill payor i.e. like my house Unifi .

They issue me a warning.

Then the next day, i decided to spend all the coin to pay for another bill payment account (1425 coin) , next 2 hour get permabanned .

They say is abuse. LMAO.

Lucky i just topup the exact amount to burn the remaining coin.
In the end, Shopee is arrogant and can slap any shit despite promise these reward to u.

Then i am doing another new shopee account .. without paying bills, just buying stuff online, everything sailed very smooth...
TLDR , shopee will monitor closely the bill payment stuff for duplicate account.