Subscribe Email Don't sending email testing & Notification Subscribe

Dear Support,

After I'm buying your Plugin and testing on my project website :

i got problem :

1. there is no email notification for join as subscribe after i'm insert email on subscribe by email widget
2. there is no email receive on sending email from wp-admin

i'm using Google Mail for smtp with this configure : port 25 on wp-admin > setting > writing

can you help my problem?