Ewwww.
Semisol and I have fallen out in the past over nostr stuff, so this opportunistic shill of his own project also has personal attack slant ("management"), which horrifically unfair to all the great contributors LNbits has.
Find me a foss bitcoin project that hasn't had vulnerabilities, especially one still in beta! Soon we have the architecture hardened enough to get core fully audited. All those millions of hours of foss dev time to get there has been trampled on by Semisol pure opportunism. This article could written about ANY bitcoin project that handles payments. LNbits continues to improve rapidly, it's infinitely better than 6 months ago, and will be infinitely better in 6 months more, that's how software works.
We ourselves run a demo sever I the wild, with live funds on that we test cutting edge improvements on. It's been running 4 years, attacked in every direction. Users have had accounts for 4 years! (I myself have plugged funds that were lost in the first few years, when sure the software was bad).
How utterly obnoxious this article is.  

 Is there a way to undo admin top up yet? Because I still have 25 bitcoin according to lnbits and no way to undo that test.  

 DNIs new user manager will make easy, although you could send to another wallet and delete the wallet, that would work.
I'm sure DNI would be happy to have tester of his branch though, if you want that feature sooner.