It's frustrating when apps disappear like the mystrom one for solar monitoring. While looking for solutions, I found that sometimes you need creative breaks too. For fun, I've been using photo to coloring page tools to relax. Maybe that could help others waiting for app fixes!
Solution can be found here https://pandasdoitbetter.blogspot.com/2023/12/lametric-time-mystrom.html
I also don't know why it disappeared when there was no apparent update. But you can use another similar function to replace it.
Rene
Why ist the mystrom app gone? This app worked fine! I need it to be able to measure my current solar production.