Please note that there are websites that do not allow to be embedded, thus CTAs do not work on them.
Actually JotUrl automatically checks, during the preview within the CTA wizard, whether the destination webpage is embeddable or not and shows a warning for all websites that do not allow embedding (see attachment).
Furthermore, please note that you can also check whether a destination website is embeddable or not by running the embeddable test tool, provided within JotUrl, for each webpage of your interest.
Discover how by watching the following video tutorial → http://jo.my/joturl-embeddable-test
It should also be noted that if you are using a tracking link with HTTPS and a destination website with HTTP, you will not be able to view the destination webpage even if it is embeddable, because modern browsers block everything in HTTP on HTTPS pages.
Finally, in case the desired webpage is not embeddable we suggest to look for a similar but embeddable content on the Web, in order to be able to add your CTA to it.