Throughout the day, the error occurs continuously, but not consecutively. Sometimes I log in directly without problems, but if I click on a link on Facebook, Google, or anywhere, it often gives me this error.
In general the problem occurs 70% of the time throughout the day
Site May work when you press on link , but may not
But now the error increasing
Note : when i pressed two times on the link here it work one time and one no , also when i enter the url in brower bar But i press on any backlink on social media, code error happens in all times
Also the site on googke search not reached with the same error
You can check by typing aiconvert in Google search. I didn’t know what is the reason fir such 521 host error
Thanks alot for your answer . My mentioned link here also working for me . But for example, the way in the metionrd video , error occurs as well as any backlinks on social media , and in different 4 browsers .
Also in the test ( in mentioned image ) it fails to be reached