I am reopening this issue , since no one gave a proper solution to this. It was quite rude that the issue was closed with reason of “inactivity”, when a proper solution was not presented.
I facing the exact same problem of bing bot not able to fetch, with this error.
Status: Unexpected Error
My domain name is https://mr-kumar.tk
Also, on old devices and on some places in various countries I get reports that users get SSL encryption errors on their browsers.