I unlocked just a month ago to 2 months ago. Didn’t see this quota, maybe some markets have more restrictions than others.

On your xiaomi account? I never saw that quota thing, is this for the account to have unlocking privileges?

Credits? I didn’t need any credits, I used this, from the official website. I just checked on the fastboot screen (using this program) once in a while for getting the time to unlock the bootloader.

Can you explain a little more?

Yeah, it needs an xiaomi account with unlocking privileges (I have one from 2018, so this step was already done) and a Windows partition with the xiaomi bootloader unlocker (the official one, updated to the last version), then putting a SIM card into the phone, putting the same account on the phone, going to the bootloader unlocker, checking all the boxes and then just waiting for the time it says on the unlocker to unlock the phone, with the SIM card and not changing the account on the phone.

I just added a Windows 10 IoT LTSC partition to do that :/, then deleted it afterwards.

What about GSI roms? Like this or from Andy Yan?

There are a lot of GSI roms out there, one could fit your needs.

I never found one to buy, it seems I would need to sell my kidney to buy one second hand.

Xiaomi smartphones are cheap, but the waiting period is horrible (two weeks now), saying this from my Xiaomi Redmi Note 9s on LineageOS with microg. (I’m actually on my computer right now)