A lot of push notifications are not send the featured image

Webpushr’s integration to my site is ok, following the guidelines. But, even with featured images correctly set on admin, and featured image uploaded to my posts, this doesn’t work almost always.

Can you try sending yourself either a test preview notification from WP plugin or tag yourself as a test user and then select test segment to send the notification just to you to test. related link: How to add myself as a Test User - #2 by webpushrstaff

I’m trying to send a test notification through WP plugin, without success. Nothing arrives to our test user.