NET::ERR_CERT_AUTHORITY_INVALID on my mobile phone

I don't know if this is the right section to write this, but when I want to check the BeamNG website on my phone (Samsung Galaxy S3 Neo with Android 4.4.2 KitKat) it doesn't load the page and this thing displays instead:

I'm using Google Chrome 54 and I have the "Request desktop site" turned on. Is this a problem with my phone/Chrome or it's something server related?

 

I'm using Chrome 69 on my desktop, and my I can access the site fine. It may be something to do with Chrome/your phone.



You're using Chrome 54, which is very outdated. Try updating it and see if that helps.

 

Updated the app, but I still get the error. :\

 

You could try clearing cache & cookies, and see if that does anything.

One option I read is to manually install the certificate, but it looks very tedious, and I'm not sure if you can do that on mobile.

https://www.supereasy.com/how-to-fix-neterr-cert-authority-invalid-in-google-chrome/

 

The time and date is correct and synced with the network.

---

Oh well.
Now it loads the Forum page, but there is this:

 

It might be happening is because the browser is trying to load an old certificate that is no longer used, therfore causing the error.
--- Post updated ---
It may be caused by the DNS server you're using, you could try to change it, and see if it does anything.

 

Ok so
After clearing the cache and deleting history with CCleaner there are no errors/red warnings.
Thank you both @Giraffinator and @Nadeox1


I think this thread can be locked and archived btw

 

You're welcome @Alex [ITA].