You could try VPNs from providers such as Avira, Tunnelbear, Express, etc. (Avoid Norton would'nt even let you uninstall in peace)
That's not a good way to go though if you're using it on your main, as it's very likely everytime you login to Neopets the ip will change alerting their system. Do it too many times they will freeze you. Note, it's rare though as the ip maybe different but the region will be the same, but still there might be others logging in through the same ip.
What I suggest to you is get an ip proxy for yourself and in any browser of your choice put that proxy (ip address + port) that way you have your own unique ip address and no one else is using your ip, also you can assign different proxies on the same computer and have multiple accounts logged in at the same time via different browsers. There are many good proxy providers on the internet. Just make sure that you get a proxy that lasts a couple of months and not one that expires every week.
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(you need an account to see links) has provided a fantastic answer corresponding to the vpn approach and she is correct tor browser has a high freeze rate as everytime it logs into Neopets with a different ip(Now California, next login New York, next might be out of US too).
When ever you approach freeze rates, just ask yourself a simple question. What would a honest player look like?
Same computer, same ip, same region.
Ps. Ignore the typos, I use autocorrect on my phone.