You are confused. There is no online version of Premier. The desktop download versions are Deluxe, Premier and Home & Business. For online the versions are Free Edition, Deluxe or Premium. The one closest to Premier would be Premium.
Do you fully understand the difference between using desktop and online? You need Windows 11 or a Mac that meets the system requirements to use desktop download. Does your computer meet the system requirements?
If you want to use online instead----perhaps because you still have Windows 10?---- you can do that ---understand that with online, you get one return per fee. Every return requires its own email, account and user ID. You pay separate fees for federal and state.
Desktop software
Every version has all forms and schedules
Forms mode to see all forms as you work and “what if” feature
Can e-file up to five federal returns and their associated state returns
If you have more than five federal returns the additional ones can be mailed
Tax file is stored on your own hard drive
Always available even after tax season ends
State e-file fee is an extra fee. State can be mailed to avoid e-file fee
Desktop is more cost effective for multiple returns for family members, etc.
Desktop software is available from Intuit or from various retailers—prices vary
Only works on full PC or Mac—not on any mobile devices
Desktop --unless you specifically buy federal Deluxe only from a retailer-- will include the software for one specific state. You can prepare as many returns for that state as the number of federal returns you prepare. E-filing state returns is an extra fee which can be avoided by printing and mailing the states. Additional--other--state software is an additional fee for the software. Online Software
Online TurboTax
Forms and schedules supported vary by which version you use
No Forms mode, but you can “preview” Form 1040 and Schedules 1, 2, or 3 before filing
One return per fee
Separate fees for federal and state returns
Each return needs its own email, account and user ID
Tax file is stored in online account for seven years
Can be used on any device with internet access
When you use Desktop TurboTax, which you download to your own hard drive, you can prepare and e-file multiple returns for the cost of the software. You can e-file up to 5 Federal returns—more if you mail the additional ones. If you have multiple returns to prepare for family members, Desktop is more cost effective.
You can seek a refund for the Premier download you purchased and then use online if you want to.
To request a refund for a TT product