Some companies don’t allow you to change router as part of the contract. That happens here and in Latam sometimes.
Other times, they use these backdoors for technical assistance in the case you report an issue and they want to ensure is not inside or your manipulation. This can leave your issues unsolved or make you pay for something you didn’t make.
You shouldn’t be using an ISP-supplied router anyway, right?
You don’t know what they’ve put in the firmware for remote management.
Even buying the same model router from a store to replace the ISP one would be preferable.
I know, but I live with my parents who don’t want to do that.
Some companies don’t allow you to change router as part of the contract. That happens here and in Latam sometimes.
Other times, they use these backdoors for technical assistance in the case you report an issue and they want to ensure is not inside or your manipulation. This can leave your issues unsolved or make you pay for something you didn’t make.
In that case I would look into switching ISPs, or maybe connect another router and put the ISP-supplied one in bridge mode if possible.