Just use different browsers for each account and don’t get them mixed up. AW don’t track IP address exclusively. On most (all?) domestic broadband accounts, there’s only one world facing IP address and all devices on your internet network get a different private address which NATs to the real world address. To the Internet, all your devices appear on a single IP address.
A few years ago an SP told me the way girls get more than one account without the multiple account flags is to make the request to AW. They review the request, and possibly supporting evidence, and say yes or no. SP in question had 2 public ally unlinked accounts because she had some stalker ex client causing some hassles. AW reviewed the messages he’d sent her and granted the unlinking.
Of course, it might have been a load of old bollox she was telling me. Only reason I found out both profiles were the same girl was when I booked the second profile after seeing the first profile a couple of times. The SP told me when I put the booking request into the second profile.