I'm also getting this error after trying to setup Privacy Pass on iOS 18.5 with Orion 1.3.25 (11) (WebKit 8621.2.5.10.10). I tried enabling the debug log in the Orion app, but did not see any log lines related to the issue. The Privacy Pass feature is working fine on my other laptop with the same account, and I am able to perform normal Kagi searches on my iOS device fine without using the Privacy Pass feature. Please let me know if there's any other information I can provide to help track down this issue. Thanks!