If I have an urgent query can mention someone in a post in this forum?
You may find an answer here.
No you cannot. _____________
@misscrystal is correct. Without knowing what on earth you mean by urgent query, the answer would have to be no. Besides that, it is likely that if it is urgent and involves another Fiverr user, it would be a query for Customer Support, not the forum.
( urgent query)I mean some rules of fiverr and the forum, that I don’t know.
You can read the rules for the forum by clicking on Vickie’s link.
You can read the rules for the main site by clicking here https://www.fiverr.com/terms_of_service.
Both links will tell you almost everything you need to know about using Fiverr and its forum.