Hi there
looks like tixati is having problem opening ports via UPNP
i use v3.16 on windows 10 with no firewall, router is Sagemcom Funbox3

in the logs i see
"
[12:45:04 AM]  NAT-PMP mapping TCP port 41477 on gateway 192.168.1.1 - socket error waiting for reply: Timed out (50434)
[12:45:09 AM]  mapping TCP port 41477 on gateway 192.168.1.1 will be retried every 5 minutes
[12:45:14 AM]  NAT-PMP mapping UDP port 41477 on gateway 192.168.1.1 - socket error waiting for reply: Timed out (50434)
[12:45:28 AM]  mapping UDP port 41477 on gateway 192.168.1.1 will be retried every 5 minutes
"

deluge seems to have no problem using UPNP on the same system, router reports this:
"
UPnP IGD rules table in IPv4
application/service host IP address external port internal port protocol name / IP address
Deluge_2.1.1 libtorrent_1.2.15.0

192.168.1.12

59708

59708

TCP

Deluge_2.1.1 libtorrent_1.2.15.0

192.168.1.12

59708

59708

UDP

"