Not quite correct. They didn’t start charging for API usage. They banned it and pretended it could be paid for with completely absurd prices nobody could reasonably afford.
Go to the outer status page. The router should display whether it has an internet connection to your provider. If no, then your router/modem has no credentials or another issue preventing access.
If it shows as working, then you can narrow it down to incorrect DNS and IP routing. Perhaps dynamic IP allocation is set to off or another configuration error or bug, in which case you might need to reset all the router settings. Then, is it only broken for a single end device?
Though the application overall is stable and usable, it should not be considered safe for critically important work. There are numerous bugs and half working implementations. Pull requests are greatly appreciated.
Barely anybody uses all of the features, but one might be enough or the person is used to the UI. It still is not helpful and slightly unfriendly to assume the person doesn’t know what they need. Like when I ask for Excel, then I mean it. I don’t need a markdown table or the Word “Insert Table” feature.
I would also like to add Windows Photo and Microsoft Paint. /s Please stop giving “alternatives” when these do not even closely match the featureset of a given application unless asked for advice.