Facetime link showing unknown caller

Please help. I recently from my pocket created a facetime link and called it and also screen shared, when I realised it had said it had been up for 10 minutes. On the call log it was saying unknown number or sender can't remember exactly but unknown something. Whenever I clicked the link it would say the same thing and show up in my call log. How has this happened? It looked to me as tho the link had been shared via message but there was no trace, i also found it on edge instagram and whatsapp so it was obviousky going mad in my pocket.

Now when I create a link on purpose I can't get anything to show up in my call log at all. Please can someone help as i don't understand what has happened and why and how it can show up unknown.