Hi
I wrote about this previously on two occasions.
Bet Victor refuse to accept Monzo while displaying the Mastercard logo on their site as a deposit method. This is against Mastercard terms and conditions and Mastercard direct me to yourselves to complain about it.
The first time I brought it up was Dec 2020. Then again in August 2021.
Can Monzo please challenge this or are Monzo just not arsed that their cards/bank is being refused at retailers?