Content Security Policy Directive errors - way beyond me!

We have WonderPush push notifications installed on our magento 2 website - however subscribers are not being shown in the dashboard. A check of Console shows a number of errors relating to "content security policy directive" which frankly means nothing to me! Troubleshooting document from WonderPush is of no use to me but may help someone who knows what they are looking at! https://docs.wonderpush.com/docs/troubleshooting-website

We need someone to fix this for us and explain what happened as we followed all instructions from WonderPush