Hi,
The link to this forum is wrong from the C1 Portal, it goes here,
https://c1forum.comodo.com/forum/main-forum and that page is saying,
Invalid Page URL. If this is an error and the page should exist, please contact the system administrator and tell them how you got this message.
I think the link should go here,
https://c1forum.comodo.com/forum
Best Regards,
Noiden