Hi @andrewatfornax. Thank you very much for your answer. I finally found a solution for my problem, i'll post it here if it helps someone.
I had a redirection rule in my .htacces in public_html (involving the ending / on the url):
# remove trailing slashes
RewriteRule ^(.*)/$ /$1? [R=301,L]
I added a .htacces file in the folder of the adserver deleting this redirection rule. Then the installation could be completed and now Revive is working fine!
Thank you anyway.