‘Unable to connect to Sonos’when moving between properties

Hello,

My parents property has a Sonos network, I have noticed that when I go to their house, use their wifi, then return home I cannot connect to my home Sonos. I am ‘on’ their Sonos system too (I.e. I can control their system when I am there using my phone and their wifi). 

However, regardless of whether or not I control their system while there, when I return back home and try to use my system the app simply displays the ‘Unable to connect…Let’s fix it’ error. I run through the steps, it tells me ‘We’ve found multiple systems’ (mine and my parents). The only option from here is turn it all off and on again - annoying.

my wife’s phone / iPad that hasn’t been to my parents house does not have the issue, connects to our home system fine.  I can also still see the speakers on AirPlay and play to them so I’m pretty sure it’s an app / iPhone issue?

I’ve tried to turn off ‘private wifi address’ on my iPhone as shown in a similar issue but this hasn’t worked.

it’s worth noting that overnight/after some time it seems to resolve itself but very frustrating when I return home and want to use Sonos app,

any ideas?

thanks!