I have an Octavia 2021. In September 2023 I took it to France for a holiday - as we got down south the Infotainment exhibited the issues mentioned by the OP and it remained unusable for the duration of our 2 week trip. 2 days after returning to the UK it reverted to normal behaviour. I contacted my dealer who said they could not diagnose if the system was now working. In 2024 I again travelled to France and exactly the same issue occurred - curiously at exactly the same place (a service station the Aire de Boismande). On my return to the UK the car again began working normally. I insisted the dealer diagnose the issue and they told me a software update was needed, not covered by warranty. I paid up and considered the situation resolved. In 2025 I again travelled to France - this time to the south-east. You guessed it, just outside of Valence, the same issue recurred and the infotainment system remained unusable until my return to the UK, when it began operating normally again. I contacted my dealer and - interestingly - was told "This is a known issue associated with a country code problem. The system functions as expected. There are no instructions from Skoda on how to fix it. Please contact them directly." To cut a long story short, I have spoken with Skoda UK - they have asked me to book the car into a dealer (which I have done) and they 'will send instructions to the dealer on how to resolve the issue'. I have asked them to tell me what the fix is, but they have so far responded with 'this is not customer-facing information'. The car is booked in for October 21st - I shall keep you posted on the outcome. :-)