Are you still have the first two problems?
if yes:
1) the error message is being caused by the blank space at the end of line 4:
"?> "
trim the blank space at the end of that line:
"?>"
2) Please send a link so I can investigate the css.
3) Please send a copy of the WA_Universal_Email/WAUE_index3_1.php so I can look into how universal Email is configured.