I am new to adwords and this is my first campaign with it. I use Facebook ads regularly and am pretty familiar with them.

I am getting the following issue and would really appreciate your help in understanding what is causing this issue and how to fix this. The error message and image for it is below.

Your keyword, combined with other targeting in your ad group, matches very few pages on the Display Network.

https://imgur.com/a/zFKXkjE

Earlier I had multiple keywords inserted and their Status was Read. I don't remember the exact error but I deleted all of them and now I only have one keyword which in the format Word1 Word2 Word3.

It has been a few hours and there have been zero impressions on the ad. I am not sure if the error in the screenshot is even the error that is preventing the ad from working. Appreciate any suggestions on what I might be doing wrong.