I try to update a joomla 2.5.28 site with artiojoomsef free to joomla 3.8.5. I use Megrate Me Plus. In my new site, I can't acces artio joomsef general configuration (it's a blank page). I buy Artio Joomsef 4, but I can't insert download ID (same blank page). Plus all links are broke. I have 20.000 articles (It's a newspaper site) and I can't afford to change any links.

Site is: www.actualitateaprahoveana.ro
New site: www.actualitateaprahoveana.ro/mmp_upgrade