Search my site code, remove a link

i had a website on a .zxq.net subdomain which i moved on to https://ieee.pnec.edu.pk because of facebook not allowing me to share links containing zxq.net

all went well but now facebook says that my site contains a link containing zxq.net

after hours of undoing all the theme customization i copy/pasted from previous site and checking all the pages and its source for the link ive found and removed all the zxq occurrences i could find but facebook still doesnt let me share.

ive tried sharing individual pages… blank pages share fine.

ive tried pages with no zxq link in its source but it doesnt
is there any plug in that can crawl through my website and look for zxq in the entire code because its just not practical to go though 50 or so posts manually