Помогите

first 2 languages allowed english (as you choose) and german

you can't upload your own plugins that is not allowed

but you can request plugins that on spiget or poggit

in your language:

не можете да качвате свои собствени приставки, които не са разрешени

но можете да поискате плъгини, които са върху spiget или poggit

used google translate

and you can install plugins by switching software to pocket mine in software page

and then go to plugins and search if it is not in the search request it from poggit or spiget

you must change software to pocket mine

Вы должны сменить программное обеспечение на pocketmine