Although, I have to say that the burden of showing proof does fall to Betcoin.AG. OP shared their betting history --not a screenshot, though-- and one certain telltale of arbit betting was an unrounded number placed as a bet --$12.34, 72.19 as opposed to $12 or 75, for instance-- and although OP can intentionally rounded their number to hide the suspicion, it'll be nice if betcoin could give something more than what can basically summed to, "we're right, you're wrong. Our decision is final. Bye."
Normally I placed round bets. But sometimes I used max Button, because it was easier. Limit was low and I placed the maximum amount allowed. Therefore I´ve some unrounded inserts.
Most bookmaker don't close the whole account. Normally you still have access, but betting/casino is limited. Then I could have also provided screenshots. But Betcoin already knows why they close the entire account.