Lenny Jobling

When I set autopilot after takeoff it doesn't work. It doesn't climb up to the set altitude, the speed I set doesn't work. Also, suddenly after 30 seconds of me setting the autopilot, it disconnects and uncontrollably climbs with a vertical speed of 15000fpm. I have flown airbus, Boeing, ember aircraft on msfs and know how autopilot works. But I cannot understand why it does this. If anyone has any advice please let me know.

Hello, I have purchased the inibuilds a350 in MSFS 2020 marketplace store on pc. I cant download the liveries on your inimanager. When I try to download them it says ''no product installed with liveries.'' Is there any way I can get access into downloading them. Thanks