Accountant advise for foreign investor

[DS MokNgo]

Hi All,

I am not a US resident and live in Australia. I have sold my US investment property in 2023. For Tax Return 2022, it is my first time I need to pay tax to IRS ($269). My accountant gave me instruction for paying the amount:

 Include Form 1040-V and a check or money order in the amount of $269.00, payable to
     the "United States Treasury". Write your social security number or tax identification
     number and "2022 Form 1040NR" on the check. Do not staple or otherwise attach your
     payment or Form 1040-V to your return.

     Mail the return and payment to:
     Internal Revenue Service
     P.O. Box 1303
     Charlotte, NC 28201-1303
     USA

It looks like I have to mail a physical check to IRS? Does the above info given to me looks correct and not a scam? Is there an easier way like direct debit from my bank account? I do have a Wells Fargo account, although I only have experience with Bill Pay, since I am not a resident I might not have access to wire money via online wells fargo app. But I use to be able to link the property management portal to my bank account in case I need to contribute fund to the property management company's account.

My accountant is willing to charge a small fees and handle the above payment for me, however I might have a bigger amount due to IRS after completing the 2023 TR (for capital gain tax), so I am not sure if I am comfortable to send my accountant a large amount and she then pay IRS.

Also would anyone recommend any good / reliable accountant for my TR 2022 and 2023, who is also familiar with FIRPTA withholding? I have been using my current accountant for many years, however for the past couple years, it took me months to follow up in order to get my tax return done. So I am open to see what options I have, and how much they would charge.

Note that my TR2022 draft are almost good, just a few figures need to be corrected, so they are consistent with the previous year TR. For 2023 TR, IRS held 10% of the selling price because I am a foreigner. I am unsure if I need to pay extra or will get something back from IRS for TR2023.

Thanks so much for help!