I have, what’s already in Opera, which is the browser I am using on the computer. I also use Pi-hole with several blocklists.
But: These problems also occur on my iPad in the Discourse app and in other networks, including mobile data. So no ad blockers or anything like that.
I can, but not today anymore. 
Sure:
{"reports":[{"type":"posts","title":"Beiträge","xaxis":"Tag","yaxis":"Anzahl neuer Beiträge","description":"Neue Beiträge, die in dieser Zeit erstellt wurden","description_link":null,"data":[],"start_date":"2025-01-18T00:00:00Z","end_date":"2025-02-18T23:59:59Z","prev_data":null,"prev_start_date":"2024-12-17T00:00:00Z","prev_end_date":"2025-01-18T00:00:00Z","prev30Days":null,"dates_filtering":true,"report_key":"reports:posts:20250118:20250218:[:prev_period]:50:4","primary_color":"rgba(113,184,254,1)","secondary_color":"rgba(113,184,254,0.1)","available_filters":[{"id":"category","type":"category","default":null}],"labels":[{"type":"date","property":"x","title":"Tag"},{"type":"number","property":"y","title":"Anzahl"}],"average":false,"percent":false,"higher_is_better":true,"modes":["chart","table"],"prev_period":0,"limit":50}]}
As this does not show anything, if I read this right, does the safe mode make sense?