Hey, I just had this issue and unfortunately there's not a whole lot of options unless you're willing to get a second number or use some shadier methods that I won't elaborate on. People have complained about the 1-phone-per-account policy for years, so I doubt it's changing anytime soon.
The only pseudo-workaround I found is unlinking your phone number from your main so that number is freed up for you to use with your alt. Obviously this doesn't work if your main also needs phone verification for other servers, and even if it does work you're probably going to want to set up another 2-factor authentication method for your main.
Yes, I am well aware I'm toeing the line with the no-necros policy, but in my defense it's not like I'm bumping this thread up much. As of writing, there is only 1 thread above this one and it's a 3+ year necro.
