If I purchase 3 codes, how many WordPress sites can I use them on in total? For example, if I have 3 sites along with 3 related Pinterest accounts/profiles, will "Pin Generator (3 codes)" allow me to run them simultaneously so that each site connects directly and separately to its corresponding Pinterest account? Also, can you confirm whether the 3,000 credits/month are provided for lifetime use, since the checkout page currently shows it as only 1 year?