As shown below mempool no longer shows 2H live on the dashboard page. It does not appear to properly load mempool data either as indicated by straight lines in memory size and transaction throughput.
I rebooted once and did not show any difference. Interestingly it showed 2H live with approximately 30 minutes delayed data once the page is refreshed(F5) several times.
After a while mempool dashboard started properly displaying 2H live time span. I have no clue what caused 7H time span in the first place and how it came back to normal.
The 2 hs and 24 hs graph is ok, but the week, month and larger time have wrong range. The public site https://mempool.space/pt/ has a newer version and is fine all ranges.