You’re making it sound as if WeMod doesn’t provide for Windows Store games. This is incorrect.
WeMod has a lot of Windows Store trainers, all of which the gaming community has voted for.
Granted, the majority of Windows Store trainers are for popular games. Three examples:
- State of Decay 2 (Juggernaut Edition) Cheats and Trainer for Windows Store
- ARK: Survival Evolved Cheats and Trainer for Windows Store
- Halo: The Master Chief Collection (Halo Reach) Cheats and Trainer for Windows Store
But we do also have Windows Store trainers for less popular games as well, because, again, the community voted for them. Three examples:
- Cuphead (Windows Store) Cheats and Trainer for Windows Store
- Ori and the Will of the Wisps Cheats and Trainer for Windows Store
- Phoenix Point Cheats and Trainer for Windows Store
Making trainers for games that barely anyone on WeMod plays is an uneconomical use of the trainer development team’s time, money and resources. It’ll also upset the majority of the community who voted for more popular game versions if we focused on the minority. This is how democracy works, I’m afraid. 
You have the ability to improve a trainer’s chance of being made:
- Play games using WeMod to get WePoints every 24 hours to convert to vote tokens.
- Complete objectives on the WeMod dashboard to get more WePoints.
- Use your referral link to invite friends and people from other communities to come and vote while being rewarded for it.
- Go Pro, either by purchasing a subscription or through referral link rewards, to double the amount of WePoints you earn and therefore get more vote tokens.
As said previously, it’s not WeMod’s fault if Windows Store is unpopular. You’ll find that this problem exists in a lot of trainer services online. In fact there are some trainer services who outright refuse to make Windows Store trainers. WeMod, on the other hand, is happy to make Windows Store trainers as long as the community has shown that a majority wants one.
Now, go out there and prove to us that a Windows Store trainer for whichever game you’re trying to get one for is in high demand.