The game was recently updated. Therefore the trainer will also need to be updated.
You can request updates via the WeMod desktop app.
This link explains how: https://support.wemod.com/article/43-how-do-i-request-an-update-for-games
The more requests it has via this method, the higher up the development queue the trainer climbs. 
If the button to request an update is not visible for you, see here for the explaination: https://support.wemod.com/article/100-why-cant-i-request-an-update-for-a-game.