RJLodigiani If, with the filemanager of c-panel, you put the image in the main web-directory of your server, we will probably be able to see it. Probably it's the folder public_html
or www
which you can see in the filemanager. You could also make part of your Dokuwiki-site public and then use an image in your DW-site (but why use that if one can us https://imgbb.com/ ???).
Also through the link you posted people could see the website of your personal DW-install. On the first page it had your admin-username and admin-password and that page is public. @andi obfuscated the url in your previous post and I took the liberty of changing your password. Send me an email at bvdbos (at) gmail.com
or just start over with a fresh install (there was nothing it it anyway except for one public page with your admin login/pass)....
Sorry, I feel like a hacker/defacer but your personal wiki-site was open for everybody to anonymously create, upload etc etc and it had your admin details open. Others here : feel free to criticize me for taking this step but it was also open to install plugins and with that, it could be abused in many ways....