In your MeisterLabs account you have the possibility of renewing your subscription manually if it has expired.
Sometimes it happens that the system may not renew your subscription if the attempted charge is declined by your bank or PayPal or if the current billing information is no longer valid.
First, make sure you update your billing information. Please check this Billing support article in order to update your billing details.
Then, to manually try and renew your subscription just click on the Extend Now button at the top of the screen, in your Account Page.
In most cases, this should solve any payment issues.
If this still does not work then please contact our support agents and they will further assist you. (Contact Us).