Pedram, are you affected by C2 on gitlab.com, or can you demonstrate some evidence of anyone who is?
perhaps we can attempt to verify this C2 complaint better, and consider adding C2 to it's ERC checklist (aka: "Things that prevent gitlab.com from C") - i have seen a similar statement before; but it is non-trivial to confirm, for anyone who is not blocked this would not affect the over-all grade now; because it has been determined that gitlab.com also no longer meets C0 - those website changes have been discussed and approved - the website will show gitlab.com as 'F' grade soon, along with a few new hosts with higher grades (sr.ht=B, codeberg.org=C, notabug.org=C)