Hello,

 I have attached a screenshot please check. Click Here

After create subscription  copy the product i'd and go  ( app\src\main\java\com\Your_Packege_Name\app\config.java ) to and paste it their.

after this all you need to update your app on play store

Plan I'd and Base Plan I'd will be Same, Mean create 1 Plan > Put I'd after that Create Base Plan  using same I'd Inside that and Select  (auto-renewing) then Put Your Price.

Thanks..