I registered at your site and read your bug postings
Did you install the 8.0.1 patch

I would start with cp-tools&information- Permission Checks you can click on each item to display the files in each folder in case one file has the wrong permission they all need to appear with ok

Using local host then migrating to host service some items may need the path corrected in the database.
As well as the table names may need to have the case changed all tables should have the case formatted like
ubbt_FORUMS

Also you need to double check the path settings in the cp to make sure they are correct some have a test link just under the path you enter this must be run with a ok message result because it writes a test file to the path and it is required to be there
As far as email most people select default unless you require a custom setting,
at cp-general- the Forum Email Address must be populated
Because that is the email account used by the forum and it must be a valid email account

Also I usually run the rebuilders after running imports to get to UBB
cp-tools&information- Content Rebuilder

also in cp-permissions-site you will see permissions for avatars the must be a 1 in the group value for allowing access. There are three of them
Make sure you set valid paths to folders that exist ubb does not create folders so point to a existing folder or create a folder
And make sure you click the test directory link below the path and get a passed status so it write a file to that folder


There are many settings that should be double checked other than noted here but that is a good start

Blue Man Group
There is no such thing as stupid questions. Just stupid answers