I didn't go in today, but I will definitely be going in tomorrow. Montreux station is a very pretty 20 minute walk from here (during Corona, I am going up and down the steep hill trails and getting very fit in the process). I've had just been translating your situation into French, so that I can give a very clear and concise explanation without garbling it. But I know most of the agents at Montreux and they are all very nice, young and old. They've helped me out loads of times, far more than I've ever helped them out, so I am confident of a favorable resolution.