Fritzbox with QNAP Core Error

Im havingsimilar trouble - here is the message I get (which I dont understand)
{
“connectivity”: {“status”:“NetworkError”,“status_code”:502,“error”:“error: Error: connect EHOSTUNREACH 106.69.178.3:55002, response code: undefined, body: undefined”},
“external_ip”: {“actual_external_ip”:“106.69.178.3”,“router_external_ip”:null},
“natpmp_autoconfig”: {“status”:“NotFound”},
“upnp_autoconfig”: {“server_ip”:“192.168.178.1”,“found_upnp”:true,“error”:“<?xml version=\"1.0\"?>\n <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/\” s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/\“>\n<s:Body>\n<s:Fault>\ns:Client\nUPnPError\n\n<UPnPError xmlns="urn:schemas-upnp-org:control-1-0">\n403\nNot available Action\n\n\n</s:Fault>\n</s:Body>\n</s:Envelope>”}
}

I have a Fritzbox as my router with a QNAP as my Roon core