Could anyone check out my mistakes in this paragraph, please?

I was not talking about my logging as a cooperator in this chat. However, I have registered at this forum with connecting with an account of facebook three months ago. I had to connect with an account of facebook because when anyone wants to create an account at this forum there aren't other choices, for instance, an application form in which anyone can fill his information. Except using either a 'google account' or 'facebook account' to be connected with this forum. So I had to connect with my facebook account, whose username is 'Mohammadlardhi' . However, as you will be seeing that my username is 'a cooperator' now, which I have created recently via this like:
You requested an invitation to our site and you have been accepted! http://thechatpage.com/user/inv.htm?k=020234fe-a07d-4378-9ddf-3d29648ec9a1 MediaCET Ltd, Box 1151, Office 6, Slington House, Rankine Road, Basingstoke, RG24 8PH, United Kingdom.

This 'a cooperator' is only available for this session and after that will no longer working. On the other hand, my account "mohammadlardhi', which is also account of facebook, is permanent and contains many of my posts. I hope you understand me.
Furthermore, I would like to say that this forum sounds as if it is not compatible with an Internet Explorer.