x-notifier 3.5.18 and pale moon 25.8.1 "yahoo not checked"

I have been using xnotifier for years and it worked flawlessly with firefox. Several months ago, maybe half a year, i stopped using Firefox because of their annoying security policy concerning addons, and switched to Pale Moon.

I migrated with all my firefox addons, and xnotifier continued to work without any issues. But couple of months ago i noticed that it doesn't check my yahoo mail anymore and doesn't notify me about it.

I still can get into my mailbox by clicking on the xnotifier icon, but when i try to check email  by choosing from the contex menu "check now", it is trying to check but no use. I see "Yahoo not checked".

I checked it in my Firefox 43.0.1 (i don't use it anymore but still have it on my computer with all updates installed) and xnotifier works there.

Could you please fix it for Pale Moon browser?

My Pale Moon version is 25.8.1

My Xnotifier version is 3.5.18