As sd08 mentioned aboved its always better then make changes to your account when account in active form. I would say 1 or 2 days before that's the perfect time to make any changes, this way you will only lose 1 or 2 days funds. Also you can do a future date plan change this way you won't lose anything. But once plans suspended you only have 2 options left either you pay your current plan dues and then change plan and pay again. Or contact mod and they will fix it manually for you.
