I had another problem with mandatory tyres...Before the start of the Canada GP in our Coop save my friend got this strategy from his team. No matter what strategy he choose or how he customized it he always gets the message about invalid strategy and we cant start the race even if we close and restart the app. I think it has something to do with the livery update because after it we also experienced the glith when in Imola feature race all the AI including my friend gets disqualified for not changing to mandatory tyre. It's really shame beacause we are in season 4 of our coop and can't race beacause of this glitch. Hopefully it's sorted out soon as it is happening to many more people and it wasn't before the latest big update.
