So uhh, I basically waiting for my contact to reply me [and we'll begin our talk and handling issues] to be 100% sure of what happened. They basically popped into my TG few hours ago, and we brushed several cases [yours included] in between my IRL situation and they explained to me what happened with that uncredited bet.
Basically, I am 100% certain I understand why the bet got "missing" from the explanation, but I wanted to cross the T's and dot the I's.
So, how about this? If I still can't reach my contact in three hours, around 20:00-21:00 forum time, I'll give my explanation the way I understand it.
Got it, thanks for the update! I appreciate you taking the time to look into this, especially with everything else going on. Its good to hear youre confident about understanding the situation, and I completely get wanting to confirm everything before explaining it fully.
Im okay with waiting until 20:00-21:00 forum time if you dont hear back from your contact. Whenever youre ready to explain things, Ill be here. Thanks again for keeping me in the loop!
So, first of all, total disclaimer, I am not sure which bet were they, as my contact didn't specify them when they explained to me [nor me asking], but broken down, and if I may use the latest betting history you provided us to give us a rough understanding of what happened and why your winning bet is not credited:

The two previous bets of yours were actually losing bets. For the sake of illustration, let's say the ones that placed on 16 January, 17:13 and 18:54. The provider made an error where instead of debiting it from your balance [taking your funds as theirs, since you lost them], they actually refunded it to your balance.
Later on, you used these balance refunded to you to place bet in question [Brasswel, Micah V. Gea, Arthur]. Thus, the winning was not credited to your balance as [though I believe it was not your intention] you placed bet with fund that --for the lack of a better term-- was tainted, gained from fund that should be deducted from your account, but returned in form of refund instead.
I hope you can understand what happened to the bet based from the explanation this far.