Hello,
I am a tech enthusiast and have been managing servers since I was 14.
I understand you are trying to access your NAS from internet via a VPN connection to your LAN where NAS is. I can certainly help you with this.
Let me know if you are interested and I'll be happy to discuss this with you.
P.S. I am new on this site and am only looking to make my reputation for now so I am extremely high value for money. ;)
Best regards,
Umer