Can't find unpayed invoices

Operating system

Windows

Joplin version

3.3.13

Desktop version info

Joplin 3.3.13 (prod, win32)

Device: win32, Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz
Client ID: d41d06a130244ccebfa07007e2c54492
Sync Version: 3
Profile Version: 47
Keychain Supported: Yes
Alternative instance ID: -

Revision: 144ed59

Backup: 1.4.3
Freehand Drawing: 3.0.1

What issue do you have?

I have unpaid invoices from may/june that I want to pay, so that I can keep using Joplin Pto. But when i login into Joplin Cloud and go to "Manage subcriptions" it says that I don't have an subscription. Which i strue, but i read in the help-section that this wher you can find and pay your old invoices.

What should I do?