All of a sudden I am not getting previews even for fonts that are activated. Please advise how to fix. See attached screenshot
Hello Kevin, thank you for your post and welcome to the forum 
Was the search activated when this happened?
Thank you again,
I am not sure. For some mysterious reason it has resolved itself in the meantime. No idea why.
Thank you for the quick reply Kevin
Glad to hear it’s resolved 
Looks like search was active and the chosen parameters did not yield any result, but can’t confirm as it is not visible on the screenshot.
Thank you again,
Closing for now as resolved.