These are two separate issues. ![]()
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Can’t move = This is a game bug, not related to the trainer. It’s likely you ran into this bug hours ago in your playthrough, and that the trainer “fixed” the bug for you when it was working.
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Crashing = As you said the game was updated. Therefore, the trainer will also need to be updated. You’ll need to wait for this to happen, and you can see the update queue in the WeMod software by clicking the “Creator” tab. Also see here in the trainer’s official thread: STALKER 2: Heart of Chornobyl Cheats and Trainer for Steam - #73 by Sephyyy.