Feedback, Complaints or Problems

Hello all, I was wonder if anyone have this weird problem with the Trainer Customizer, which whenever I start the Customizer, it sometime greet me with this "129 F18" key and kept lock at that "F18" (unknown) key. It sort of hard to explain so I'll leave a link to the picture that I took, any solution would be appreciated.

Btw, the problem occur occasionally now and then, and even I download a new customizer it did not fix, and after a while it will somehow magically get itself fixed then after another while the problem would arise again.

Link to pic: Link