If your account is not above 13, but you yourself are above 13, you would need to contact Roblox to fix the problem with verification proof, or you would need to make an account over 13. This is not only extremely frustrating when trying to play with friends, but also for me as a streamer when many of my audience members were not able to join me because their account was restricted from joining the VIP server I paid for, with nothing that I could do about it. I want to mention again that this is not something I decided, but rather a result of Roblox's incompetent decisions. However, if you have made sure your account is over 13, you should have account restrictions disabled, as the screenshot below shows.
In the most frequent scenario, if you set your account to under 13, Roblox will restrict you from joining no matter what changes you set below. To be clear, the VIP server is open to everyone, but Roblox has added restrictions that prevent some users from joining. We also look for services that don’t throttle or limit certain types of traffic, such as P2P.If you want to join the Jailbreak VIP Server and receive any error, such as error 524 or "not authorized to join," you need to make sure that you have restrictions turned off so that you can join the VIP server without any problems. We recommend paid Firestick VPNs that come with unlimited data. This adds up to enough for light streaming throughout the month or a shorter high-intensity period of streaming. The best free VPNs offer 10GB a month, or 500MB a day for free. Less generous free VPNs only offer around 500MB per month, which isn’t enough to stream for more than a few hours. Streaming or running Kodi can be very data-intensive, so a generous data cap is necessary on Firestick. As with most limitations on free VPNs, this is used to encourage you to upgrade to a paid subscription. Nearly all free VPN services implement a data cap. Our Firestick VPN setup guide covers additional methods, such as using your home router or your PC. The two methods above are by far the simplest to set up a free VPN on your Firestick. Once you’re connected, launch other apps as you would normally do.Select a server location and hit ‘Connect.’.Once you’ve installed the VPN, launch it and log in (if necessary).Or, open the downloads section in ‘Downloader’ and select the apk file. Once the apk download is complete, you’ll be prompted to install the VPN app.Proton VPN’s apk download URL is: VPN/android-app/releases/latest. Run ‘Downloader’ and enter the download URL for your VPN’s apk file.Search for the ‘Downloader App’ on your Firestick and install it.