I got one of these trainers second hand without the manual and I am unable to fit my bike onto it nor adjust the resistance toggle and it’s incredibly frustrating so I hope someone might be able to help out. I have some cadence sensors all ready to go for Zwift setup.
Maybe someone else will chime in here, but in the meantime can’t you find a manual online or a video on youtube?
Did you get the head unit/computer with the trainer? Only way to change resistance. Also make sure you have a trainer skewer. Some of the standard wheel skewers will not fit into trainer skewer cups and your wheel will not have a snug fit and if it comes out while riding you can ruin a wheel. Ask me how I know.