They added:

10. None of the Work may be used in any form as part, or whole, of an integration, plugin or app that integrates with Atlassian’s Confluence or Jira products.

Can’t you just not use their cloud services? It makes you create an account for setup, but once setup was done I never touched it.

I do not know what you mean by third-party integrations. I do not use any cloud stuff, Ubiquiti’s or otherwise.

I used to use OpenWRT on various devices, but two years ago I got a UDM-Pro, a USW-16-POE, and a few Unifi APs and cameras. I run pi-hole on the UDM-Pro. I have no complaints. It is more expensive than piecing it all together using OpenWRT and some Raspberry PIs, but way easier.

You could use multiple USB microphones and do the mixing in software. I prefer using an audio interface (e.g. UMC204HD) because it is simpler to set up and adjust levels, and because it lets you use any widely available microphone, or plug in an instrument (e.g.: electric guitar, electric piano). You can plug your headphones into the audio interface and adjust the relative level of your own sound and what is coming from the computer (e.g.: your teacher). sweetwater.com has the UMC204HD and the UMC404HD on sale right now.

I do not have any experience with pick-up mics.

I tried Jitsi, but was unable to match Zoom’s audio quality.

The difference between Jitsi and Zoom was noticeable, but less important than the difference between the mic built in to the webcam and good mics. I use an SM58 for voice and an SM137 pointed at the cello just below the bridge, through a UMC204HD.

You can sync messages from phone to phone. https://support.signal.org/hc/en-us/articles/360007059752-Backup-and-Restore-Messages#android_transfer

There is no reason why the message sync that works from phone to phone could not be implemented on the desktop client as well.

Like with anything, you will not know if you are going to be good at it until you spend a lot of time trying and failing and learning. If you enjoy it, just keep doing it.

While you are mastering Spring, I am mastering libraries that do the thing my program needs to do.

While you are trying to debug to your Spring app, which is a huge PITA because Spring is a rat’s nest of conflicting configuration paradigms and overlays and fills your call stack with dozens of layers of generated methods, I have finished my work and am at the beach helping my coworker debug his Spring app because he didn’t listen to me when I said not to use Spring.