Nextcloud 4+

Generally, this app works great; it is one of the bases upon which Nextcloud integrates so well with iOS, including accessing and, with the right server setup, even editing many file types from right within the app. With the 4.9.2 release however, Two-Factor Authentication via Nextcloud notification temporarily stopped working with the iOS app. Resetting the app didn’t restore functionality, and removing/reinstalling the app didn’t either. Neither did removing/reinstallling the Two-Factor Authentication via Nextcloud notification (version 3.8.0) on the Nextcloud server itself (version 27.1.3; UPDATE: BUT SEE BELOW!). This functionality worked fine in the iOS app version 4.9.1. Other logged-in clients (besides iOS) continued to receive such notifications & affect new client logins to Nextcloud successfully.
UPDATE: This issue was resolved not by an iOS app update, but by an upgrade of the server to 27.1.4. This is a great example of the integration to their system that Nextcloud is always working on, and returns my review to five stars!
Otherwise, great app & I look forward to updates & generally where the app is going. Thanks!

Edit** This was a great app, but it refuses any ** LOGIN** attempts for pre-iOS 15 Device owners
Offline files remain downloaded for not much more than 30 days, before logging you out and not allowing you access to your digital accounts.

Using mobile data while traveling to sync critical files have left me gasping when none of my data center files that spent weeks at hotspots, Internet cafes, dial up, Starlink, fiber, rentals with internet, tethered and data-capped priority in regions that even have cell towers.. running off solar, in remote environments.. ..edit..
this app has performed well except on any apple device which intentionally c*ockblovks any competition from invading the bloated and restrictive Apple data sphere.

It’s the only reason that I can see why this app will not work..

Apple doesn’t like competition, or direct confrontation..

silently making people’s digital lives worse with infuriatingly ridiculous nuances of oppressive big tech attempting to support everyone on the diverse brochure, except anyone that’s not part of the overlord cult of Apple. Shame, this app did work well before it became an apparent threat to Apple’s cloud storage scheme

Boycott apple and it’s e-waste FOSS blocking forced obsolescence agendas

I setup a self hosted Nextcloud server at home and have been using this app to backup photos and videos on my iPhone the past few years to my server. The app and host software have been somewhat unreliable but work okay until they don't. Being "free" cloud storage that I manage, I'm willing to accept the eccentricities for the most part and have continued to use it the past free years, but I'm no software developer.

However recently I think with the iOS 17 or 18 update, HEIC support broke within nextcloud on the server side. You can still backup HEIC files, but you can no longer view them as photos via the app and preview thumbnails no longer generate. Seeing as HEIC is the standard format for millions of iOS devices out there I don't see why it's taken so long to fix. The nextcloud developers don't seem to be in any hurry to fix this issue. Not sure what else to do other than wait since I'm not a docker software developer and can't fix it myself.