znc-push: Can't get push to work; not receiving test messages

I used the latest push.cpp version and installed it with the znc-buildmod tool.

Then I configured telegram first, that didn’t seem to work so I tried slack. For some reason I don’t receive any push notifications when I use the send tool or when I get mentioned in my network.

I used the following commands to set things up (webhooks, etc modified with 1 digit for security reasons, same format kept)

set service telegram set secret 364561415:AAE-2auAWabb8hA9RBGSzE-4CcU7uoFWWsA set target 330058746 send test

set service slack set secret T4DP6D16G/B4DQURW68/0sNVpqxVUhbKBdQMCcKgAWHN set username ZNC BOT set target znc send test

ZNC version: ZNC 1.6.4 ZNC server OS: Ubuntu 14.04.5 LTS (GNU/Linux 2.6.32-042stab116.2 x86_64)

I get no error messages but I just don’t receive any messages on both platforms… Does anyone know how to solve this issue?