Website seems to be having glitches

Hello - I am fairly new to the site but I seem to be coming across glitches.

1) When I go the thread I started and want to reply to the other peoples responses it asks me to log in. (I am already logged in and my and it says Welcome, Ccamp2 at top right). After entering my log in it redirects me to a different log in area. This is a cycle and it never lets me type a reply.

2) When I click on someones name who has responded to me and then click type them a private message, it takes me to their profile but there is nowhere to type them a message.