Error linking link to an image

First of all I want to make it clear that I am new to wordpress, I ask for your patience.
My problem is that I have a table with the data that interests me, here everything ok. The problem starts when I add more columns the images that I add linked with a link no longer work(I have images that I put previously with a link and they work fine).
New image that I link no longer redirects me to any link, I would appreciate your help.
Sorry for my English