Hello Saeid,
Thanks for contacting WPDM Support forum.
As you have used a cache plugin, the CSS could come for that reason. In this case, clear cache or remove cache plugin to check if the issue still persists.
Also The CSS could come from the link template you used that is Call to Action 3.
If you tried editing that link template, check if the codes are there.
After checking and removing, if the issue still persist, please provide temporary admin access in a private reply.
Thanks