IMHO this is the current best solution for not using your personal address for Shopify business credentials.
And as of yesterday 10/03/2023, still the best price and options for a business address that works with all the major carriers. Most other options are $30 a month to use for business (using business name instead of your name). ipostal.com is still $9.99 for standard personal or business virtual mailbox. You get a physical street address, NOT a P.O. Box, so you can use it when registering your LLC. In the same regard, then you don’t have your personal address listed when you search your business LLC info online. The only other fee associated with this virtual mailbox is when you first establish it. To activate the account and gain the ability to receive mail at this address, you must first complete a form (Form 1583) which requires 2 ID’s (1 picture/1 address). You can use a local notary, however if you are not a US citizen and/or you want to ship international, you must use their online Notary System, but it is fairly affordable at $25. You can also add someone to your account for no cost if you so it at sign up, if you add someone later you’ll have to do another Notary session.
Use this along with a reputable virtual second phone line service and you can help protect your self and your anonymity, and create separation from your business. I am probably going to stick with Sideline vs Google Voice or any others. It’s not free (about $15 a month) but, it’s feature packed including alt ring tone and caller ID to differentiate calls between personal/business and uses your own cellular service, not VoIP, so you get better call connection and clarity which is key when using for customer assurance and support.
I just thought I would share my experience from the last couple days. Especially, since registering your LLC, getting an address, and establishing phone and email all inter-connect.