@Kevin_Z
Thanks for the answer.
But I would like to know if it has no possibility to contain several subnets per hardware issue or it is something that could be implemented by software (with a new firmware).
And I would also like to know if you could soon implement more than one guest SSID in 2.4 and 5 GHz.
Also, in this other thread:
error Link Aggregation mode 4 (802.3ad)
I also ask why Link Aggregation doesn't work in mode 4 (adding the speeds of both channels to get 2 Gbps) and if it's a fixable problem with new firmware.
In the end I have the feeling that I have spent a lot of money on a router that does the same or less than the one given to me by my internet operator for free (except that it has more range and wifi speed).
But all those advanced features that are presupposed to a router of this category -simprofessional or very advanced- are not implemented. I feel like returning it to the store, I can't believe I don't have any of this.
Regards, Héctor.