Cannot connect from external device

I cannot connect from an external device to the DAppNode. I can through in my own network. The UI shows me “No NAT loopback, external IP did not resolve”. Fritzbox 7530 does not have this feature. I tried to add the public and internal IP to the DNS rebind protection exceptions in the router network settings. Does not work. Any suggestions?

Core DAppNode Packages versions

  • bind.dnp.dappnode.eth: 0.2.6
  • dappmanager.dnp.dappnode.eth: 0.2.40, commit: 6838be01
  • ipfs.dnp.dappnode.eth: 0.2.14
  • vpn.dnp.dappnode.eth: 0.2.8, commit: f9a8743e
  • wifi.dnp.dappnode.eth: 0.2.6

System info

  • dockerComposeVersion: 1.25.5
  • dockerServerVersion: 20.10.2
  • dockerCliVersion: 20.10.2
  • os: debian
  • versionCodename: bullseye
  • architecture: amd64
  • kernel: 5.9.0-4-amd64
  • Disk usage: 29%

Its seems like my ISP is blocking inbound traffic. At least it looks like this when doing a tracing.