The reservation through sj does not accept my cell number.? 1- --**** is the formate I used?
Try +1 999 999 9999 (using your real number)
acraven is right about the number format. SJ relies a lot on text messages for traffic info and those often gets blocked on the way to US numbers so I recommend to search for info yourself here now and then (I think the the train tab is the easiest to use): https://www.sj.se/en/traffic-information
I forgot the + before the 1. Thank you.
Frankly, I'm sort of amazed that solved the problem, but I'm glad it did.