My MachineTranslation Plugin cannot be uesd

hello, all my friends

I based example from SDL Community Plugin to make my machine translation plugin which used ITranslationProvider and ITranslationProviderLanguageDirection.

but when I try to translate the segment in an unit, the main system told me that my plugin is disabled.

and the most strange things are it's auto disabled.

so, what should I do. help me

Wang Yuan