The message is always on the timeline even if I delete it

Version Friendica 'Blutwurz' 2026.05 - 1595

Hi

someone wrote a public message on my timeline , I deleted it several times but it's still there , the message is definitely deleted, because if I click on it it tells me Conversation Not Found
Unfortunately, the requested conversation isn't available to you. etc etc .I tried with various browsers/private windows, but it's still there , some suggestions

PS This message is not visible through apps like #tusky, only in web browsers

Thanks