Exactly, Microsoft is about to shut down Access Web app. The power app is pretty good but I must tell you that, it's not stable yet. It needs time. If you need a database for 24x7 window then you should probably go for another option like AWS or Azure.
Let me explain you about myself. I am a professional MS Access developer. I have excellent command over MS Access database. Apart from this, I work in VBA, SQL, Excel, Python etc. I have been doing this since the year 2007.
Let's discuss and schedule everything. Thanks