Witcher 3, The - Wild Hunt Message Board  

any one got ideas not been on computer few days tried to use trainer tried um all keeps coming up need to connect to internet authentication for them to work yet im on internet they worked fine a few days ago

sounds like its being blocked by firewall/antivirus, or the tempfile that is used to make the trainers work is being blocked

if you have a paid account then download your offline key. The Instructions are on that web page

www.cheathappens.com/trainer_troubleshooting.asp