Plug-and-play peripherals relying on proprietary software was a mistake.
2) The submission title is false. It was not a server issue but rather a native software issue.
I'm not employed by Logitech, so I'm not here to handle your customer service complaints. In any case, Logitech has already released a fix, so I suggest that you contact them if you're still experiencing the problem.
a) should be run constantly to rewrite the keypresses
b) can't be run if the certificate lapses
If Logitech goes out of business they would never renew the certificate and the hardware you bought for the options (and for Logi+ Options lol) would became just a regular mouse with a prebaked function keys what you can't do anything with - despite you probably overpaid for this mouse exactly because it was advertised what you can.
The certificates for signing the macOS app expired. Because of that the patch needs to be manually installed instead of auto updating itself.
Things go wrong sometimes. This is mostly people catastrophising things on the internet for points.
They rewrite the functions on the fly. I.e. if Mouse4 is "navigation back" by default and you "set" it in the software to "Keyboard button A" then the software running on your computer (not the mouse) rewrites "navigation back" to "keyboard button A" on the go.
It's so bad what if you CPU is hogged then sometimes you would occasionally get the "real" button function (ie navigation back) instead of the "reprogrammed" one. Or sometimes - both.
It's utter bullshit of the design and the reason I threw that shit in the wall on day 2 and went to the store to buy Razer DeathAdder V2 HyperSpeed (R)(TM). Despite the ridiculous name and quite shitty application - most of the functions are actually stored on the mouse (besides some macro things, which is a pity, but again...).
Oh, by the way, the software I installed on my notebook to "program" that Logishit kept working, downloading updates, updating and not deleting the previous versions. I suddenly got "low disk space warning" and was like... what? And then I found this Logishit spent 20GBs of space for it. For doing nothing. Literally nothing.
But what is really puzzling is why @dghlsakjg is defending Logitech here. Maybe he has their stock or have some form of so called Stockholm syndrome.
The mouse was usable on every PC without the need to install anything, you had to configure it once and you’d be fine.
Logitech made the shitty decision some years ago to completely rewrite their mouse management software, so that it must be installed to use the main selling point features of the mouse. To be honest they left a way to store the configuration on the mouse, but they made it harder to find, configure and use it this way.
All this is a deliberate choice by Logitech to worsen the user experience just to gather your data.
TL; DR: User changed the year on his Mac to 2122, it threw a lot of errors because certificates have expired, he rebooted and ended up in a reboot loop.
This is the future: total control through certificates. "We are sorry, your heating certificate has expired. Please contact support using a valid certificate".