VFR flight planning does not work in Simtoolkitpro

Hello, my Simtoolkitpro VFR flight planning tab stays blank. See the attached picture.

In the bottom right corner it says visit openaip.net. But I subscribed here to this site, and still it did not work.

Also nowhere is stated that I should subscribe at openaip.net.

Also simtoolkitpro support is down, and I do not like discord for support.

Therefore, does anybody know what the problem is here?

Why is my VFR Flight planning system not working?

Thank you very much in advance.

Greetings,

Boudewijn