My solution is other people in the house don't rely on anything in my setup, other than the router which runs some basic telemetry and fraud/phishing domain blocking but that's all.
Latest thing is my server was hard locking up randomly every couple days. Finally thought to check IPMI and it was triggering a correctable ECC error on a specific stick of RAM.
I figured maybe the first couple errors were correctable by the ECC RAM but then they just got worse and caused the lock up.
Pulled the 2 sticks in that pair and so far so good. I'll survive just fine with the remaining 192GB of RAM lol.
Also switched from my old Dell box with Opnsense to a Linksys MX4300 running OpenWRT, saves me about 20W and its fun to try something different.
So with 20W DC draw, a PSU at 85% vs 90% efficiency would be a difference of 1.29W from the wall. Probably not worth spending more money on that 5% difference, but for the same price might as well get the best you can.
Basic troubleshooting and repair knowledge. Like just how to use a multimeter and the basics of how electricity works and how to repair something.
Honestly just basic knowledge of everything in our daily lives would be useful. People should understand how their phone works and how it gets internet access, how their car works, and stuff like that.
Yeah it sounds like the company is blocking domains they don't understand or something, and not bothering to care that you are an actual person who asked why it was blocked.
I bet they don't block gmail despite 90% of the spam I get coming from @gmail.com addresses.
Dell, HP, Lenovo all make a ton of generic office PCs that are good for a home server, and you can find older models for under $40 in the US so hopefully they're also cheap in Brazil.
ReCaptcha is usually like 2-3 9x9 grids of images to solve, sometimes with ones that vanish and get replaced as you pick them. It often takes me at least 15-30 seconds to get through it.
I think it's also not remembering that I passed one, because if I reload the page it asks me to do another one.
I generally just make notes in Obsidian, mostly about switch ports, VLANs, IP assignments and that kind of thing.
Also try to save snippets of commands or config edits I needed to get something obtuse working in case I need to do it again later.