Hello I am very sorry to hear there are issues with the games! I will look into some troubleshooting tips to help get the problem sorted out. It may be due to permissions or graphics card incompatibility. Can you tell me what kind of graphics card and CPU you have ?
Apologies for the delay, but yes I can.
My graphics card is Intel(R) HD Graphics 530 (getting on there in years but capable of running new juggernauts like Company of Heroes 3 or Last Train Home).
My CPU is an Intel(R) Core i7-6700 CPU @ 3.40 GHz and has 64 GB of installed RAM, running on a 64 bit operating system and a x64 processor.
This should be absolute overkill for these games, and if my phone is capable of running them this should not be a problem for these.