I'm thinking something is clearing your browsing cookie history... that or you're using a VPN that keeps changing the names on your end.

If it's your personal device, I'm guessing you're clearing the cookie history.

If it's a shared device, then someone else could be clearing it, either an attempt to do one of the following
1) Speed it up,
2) Look at something that they don't want others to know they're looking at...
3) or to get multiple attempts at something.


Example, to help me with Calculus, I used WolfRamAlpha website which would break down how to do math problems...

But you only got 1 to 3 free examples and then you would have to pay for greater access.

So I learned if I cleared the cookie history, they then couldn't tell I had already used my 1 to 3 free samples and I could then get unlimited free examples just by clearing my cookie history.



Also if you're using a different browser, then that could be doing it, as some settings changes could be done to delete them when you close, or certain apps like duckduckgo supposedly never let the cookies attach (I think, not fully sure on the duckduckgo, but supposedly things can't watch you on it nearly as much).