Question 1

My AVAA C214 has connected (blue LED Full) but my smartphone does not see it

MARTIN Christian · Accepted Answer

This means that credentials have been sent to the AVAA C214 and the router was able to assign an IP address to the AVAA C214.

There are too many stages in the network such as repeaters, switches, etc.
The smartphone switched network to return to its preferred network. As a result smartphone and AVAA C214 are connected to different networks.
Make sure your AVAA C214 is connected to the same network as your phone.

Question 2

My AVAA C214 has connected (blue LED Full) but my smartphone does not see it

MARTIN Christian · Accepted Answer

This means that credentials have been sent to the AVAA C214 and the router was able to assign an IP address to the AVAA C214.

There are too many stages in the network such as repeaters, switches, etc.
The smartphone switched network to return to its preferred network. As a result smartphone and AVAA C214 are connected to different networks.
Make sure your AVAA C214 is connected to the same network as your phone.