Hello,

1. I have my network set up with my google Chromecast connected to my guest network so that guests can freely cast media when they visit. However, is it possible for devices connected to the main network to also cast to the chromecast without needing to switch to the guest network? (i.e. Using my devices on main network to cast to chromecast on guest network)
2. Additionally, there is a guest mode that you can set up through the chromecast to allow for guests to cast from their mobile device as long as they are in the same room as the Chromecast (https://support.google.com/chromecast/answer/6109286?hl=en), though I am unable to get this feature to work either. I have tried to use this guest mode with my chromecast connected to the main network as well as the guest network without success. I have also tried using my phone via cell data and it does not show option to cast either. Is this a limitation of tplink network setup? 
3. I have tried to look up this issue online as well as this forum but have not been able to find the right solution. What I have found has alluded to guest network devices not being able to "see" devices on the main network. Though is there a way to set up an exception or vlan such that the chromecast can accept casting from either the main network or its guest mode?

Thanks in advance