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.