Do I have to get into contact with anyone to attempt to reapply
Please see this thread
If it is your second time applying, please make sure that the cooldown period since your first application is over.
How long is said cooldown
If i remember correctly it should be around 60 days. Please make sure you contact your previous recruiter to get the official date that you can reapply.
" Members that are removed due to inactivity must wait at least 30 days from their removal date prior to reapplying. Out of respect for ATC Recruiter time, staff may deny an application to return if previous membership resulted in low activity, a short tenure, or a voluntary exit. Members removed for inactivity twice will be permanently ineligible to rejoin."