New Offer FTPS accounts can be requested until May 12 2020. After May 12 it is no longer possible to request a new account. After 12 May the Offer FTPS will continue to exist for existing Offer FTPS accounts. After this date, it will still be possible to reset the password and whitelist IP addresses for existing accounts.
If you want to automatically manage your offers after May 12 for a seller account that doesn’t have an existing Offer FTPS account, we would like to refer you to the API v3.