Hello Bungie Support I am having the same issue. I am a software engineer and this should be a relatively simple issue to fix. The problem is in the javascript logic in the website. The issue is that there is an error in the POST request validation to the endpoint https://www.bungie.net/Platform/User/UpdateUser/?lc=en&fmt=true&lcin=true&&; returning a 500 and an unresolved promise due to an internal error code 17 (ValidationInvalidInputError) "The field \"displayName\" has an invalid value in it. Please provide a valid value for the field and try again." which is preventing the save. In my case this is the payload being posted and I don't see anything wrong with my chosen displayName. (NOTE: I removed the membership id value and replaced with dots) { "displayName": "TheTothHome", "about": "", "profilePicture": 70432, "profileTheme": 1000, "statusText": "", "membershipId": "73.....", "locale": null, "emailAddress": null } Looking at the website JS chunks all I can tell is that this is coming from thier UserService and the call to UpdateUser that is failing. The displayName allows up to 26 characters according to the HTML rule on the input and im only using capital and lower case letters so It must be inside the service where something is not treating the validation of the field properly. If the order of inputs changed or they added anything to the call it could be a case where its trying to validate a number or a boolean instead of a string and thus will always fail until that is corrected within the service logic or the post payload from the website on save. [quote]var j = function() { var e, t, n = arguments.length > 0 && void 0 !== arguments[0] ? arguments[0] : f, r = arguments.length > 1 && void 0 !== arguments[1] ? arguments[1] : g; if (l && n !== (null !== (e = null === u || void 0 === u || null === (t = u.user) || void 0 === t ? void 0 : t.locale) && void 0 !== e ? e : "en") || r !== g) { var a = { membershipId: u.user.membershipId, displayName: null, about: null, emailAddress: null, locale: n, localeInheritDefault: r, statusText: null }; x.a.UserService.UpdateUser(a).then((function() { k() } )).catch(o.b).catch((function(e) { return S.a.error(e) } )) } } , k = function() { B.a.show(E.a.Userresearch.SettingsHaveChanged, { position: "br" }) };[/quote]