I'm glad that the new installation process is better. We have invested time to improve it. We will also take our time to update our documentation as you mentioned.
About your problem, I would ask you to check your config files according to this article
. Can you follow the steps in order to fix the problem. You could also use the TeamPulse Uri Changer.
If this is not helpful, I would ask you to send us your config files and your Log files so we can investigate further.
Also are there any other changes that you have made on your TeamPulse or IIS?
Any change may be important so let us know if you have made any.
We are looking forward for your reply.