can you take a screenshot of the error.
For the past 2-3 weeks, I have frequently been getting the message that the site may no longer exist or have moved to a new address before it eventually loads what I was trying to click on.
It flashes by too quickly. I was trying yesterday - It says "Site cannot be reached" and then goes on to say that it may no longer exist or have moved to a new address... but then moments later goes on to load the page. Yesterday one person said "is this site really slow for anyone else lately?" and about 10 others chimed in to say that they've been having lag for a few weeks.
Full information, it is not outside the realm of possibility that this is malicious interference. We recently (finally) banned someone who has some IT skills, but it started before that point for me.