What about some bigger withdrawals, are they lost forever or will just wait longer?
bigger ones seem to be recredited back to balance eventually, takes a lot of time though, shorter if you are lucky.
I needed to take the mail I want to make a change of address BTC .support @ scrypt.cc address?
Your best and the only bet is to submit a ticket through support tab on the website. Make sure to provide the security data you used when registering (name, phone number, security questions) and the BTC address you want it to be changed to and you have a chance of it actually happening, low chance but better than nothing.