You've tried everything, need some assistance!
You've tried everything, need some assistance!
OP received double NAT due to his hotspot handling NAT and the carrier's involvement. He can access ports on his hotspot but remains behind one NAT layer. OP might inquire with AT&T about public IP options, though it could be costly. An alternative is using a VPN to a VPS that routes all incoming traffic through the VPN.
You were thinking about contacting AT&T to get their advice, and you're also exploring using a VPN through a VPSA. However, you haven't found clear guidance on what details you'd need to gather or how to proceed.
Since the Wi-Fi booster delivers faster downloads and uploads than the regular hotspot, it’s likely the primary network originates from that source.