Seems to be working for me
Discussion
First time it loaded ton133 or 235, after that nothing. Both on desktop as well as mobile over wifi. Now trying on cell network.
GET https://mempool.space/api/block-height/844562 net::ERR_FAILED 429 (Too Many Requests)
So looks like it's being rate limited.
Works for me. I got:
Average tps in the past 24 hours: 6.56 tps