hello, your travel history will not have had any affect on your AOR unless you didn’t meet the physical presence requirement.
Did you apply with a paper application? Did you put in and selected your email address as mode of communication? Did you put in correct email address? If you applied on paper you can try logging into the old ecas system using your UCI number. If they did issue your AOR you’ll be able to see your application in ecas.
The decision to reapply solely rests with you, but I reckon you can do it when you’ve exhausted all other options.