Hey Gutterz! Thanks for the question. I'm sorry to hear that your clients have been having trouble paying invoices through the client hub.
I recommend asking your clients to check and see if their web browser is up to date. They also want to check to see if their mobile device or computer is trying to autofill any card info that may be old or expired.
We do not believe this is a widespread issue, but it seems odd to have happened twice in a row for you! If this continues, please contact our Success Team for help. You can call them at 888-721-1115 ext 1 or email support@getjobber.com.
You can also start a live chat, go to the ? top right corner > chat with us.
I hope this information helps!