You just PM me to upload it, not sure why me. I can't help you.
X-Quad Editor was also available from the author website but the dev did not renew the domain and now someone else using it, that is why you lost access to the file.
In case you did purchase through TGC you should be able to download your copy from here:
https://www.thegamecreators.com/account/product/list
Otherwise, I guess you out of luck. Try to contact the developer:
https://forum.thegamecreators.com/user/02f6896398408fac6a9e61f84d1b9afd
Not sure if the email still works, just click PM at the bottom left corner on that page.