Modular Preamp Design

Hi, I'm getting this volume controller to work perfectly with 7 relays.
We can tell the programmer that we have 128 steps by modifying the falkpreconf.h file, line 11.

I still have several issues.
I have pops that occur at certain changes.
Where can I program this so that the relays overlap more?
When I mute, nothing happens. How do I tell the program to unmute the source relay?
I don't understand how to pair a Bluetooth remote control with this system.
Regarding Wi-Fi, I can't connect the module to my box directly, because when the ESP32 searches for Wi-Fi, it disconnects the connection with my phone.
In short, I have a lot of fairly significant bugs that I can't resolve.
I think this work is generally thorough; it's a shame to stop there; I have the feeling there must be a new version of the program that hasn't been released.
Giphilbert could you help me?
 
This project is awesome. I might suggest making a regulated power supply board with separate supplies for digital and analog and running them about 3V higher than needed, then placing local regulators on each board to get the needed voltages.
Hi, I don't understand the point of your idea.
Since the power supplies are already separated between the electronics and the relays.
Can you explain?