I really didn't have any withdrawals either. This does NOT mean that you were only mentally addicted to cigarettes. most of us are addicted to the nicotine. Vaping allows us to get the nicotine we need to avoid withdraws.
Welcome back to vaping! Just keep at it!
I started vaping over two years ago, but I fell of the wagon and came back to it this past May and have been cigarette free since June 1st.
Just keep trying...it will work!