Recent Update Causing Trouble

Hi there!
First of all, thank you for this nice free plugin ??
Secondly, I have an issue to report. Everything was working fine on my client’s website until the last few days. The credit card payment option has disappeared from the checkout page. I’ve tried re-installing it but all in vain. Can you please address this issue? Any help would be greatly appreciated!
PS: Payment option starts showing up when the testing mode is on.