This is what I experienced some time ago when I want to chase high multiplier in the keno game.
Keno has 25,000,000x max multiplier, while if we use exact $0.01 then the bet wont be accepted because there is a minimum bet of $0.01.
On the opposite side, I cant add extra amount even (0.011) because the max bet amount is also $0.01 when I play keno with the setting where there is a chance to hit 25M multiplier.

It means that there is no way to hit the 25M multiplier in keno game because of the minimum and max bet amount glitch.
Earlier I was betting in USDT unit (display in fiat option turned OFF), so I had to add a bit more so the USDT equates to 0.01 in USD.
I turned ON my display in fiat option (USD) as I see twas turned on in your end.. Keno with 25,000,000x board worked fine. I played originals with USDT equivalent of $0.01 before as well, never had an issue.

But it is indeed strange your bet did not push through since it should be converted automatically since you have the display in fiat turned ON.