[Решено] I can't connect to other sites.

Background of the issue:
I have migrated this site with my under-development website 'www.coder.hocl.dk'.

Symptoms:
After migrating I can't connect with other sites and I can't use 'pay as you go'.

Questions:
Why can't I connect to other sites after migrating?
Why can't I use 'pay as you go' after migrating?