Only EU site I had a problem accessing that i can remember was from my electricity provider. Strangely enough they didn’t geoblock me but login threw an error

Only EU site I had a problem accessing that i can remember was from my electricity provider. Strangely enough they didn’t geoblock me but login threw an error because my local time didn’t match the local (German) timezone. I changed my system timezone to Germany and it worked without issues, so I was wondering if it’s a very bad geoblock or something else entirely