It's until today that it has downed to me the mempool.space has no Tor mirror?

Anyway, I have been able to access the site throughout, but I noticed tit would be a little slow in loading at times

Otherwise, try using the fork and see if it load - https://mempool.emzy.de/

or you can use the OrangeFren version that was launched recently: http://mempool.orangefren.com/