Original from Grammarly official website/application
what you will get:
Grammarly = premium Grammarly Account.
Can use for checking essays/assignments and homework.
✌️ Cannot change account details, such as username, email and password.
✌️ Shared account, but they won’t effect your stuff when you use MS Word or chrome extension.
1- how long the account can last?
A/ we don’t know Dear as we are not the owners we just sell the empty slot in the account
2- why Do I need to pay for warranty not account time?
A/ This the way we found Dear, as we cant know when the account will stop but we can stop our warranty when the time Done.