The existing advice seems to be to duplicate your database and upgrade the duplicated database to the new version to migrate the data however in the case of needing to run 2 versions in parallel for rollback capabilities, the credentials in the migra...
If you request it on the weekend sometimes you have to wait until Monday Euro time for it to be sent to you.If you have an email that cannot receive their emails, you might need to change your email addy to a gmail temporarily.
Best bet is to put a recover stage in a block over it and get the exception detail so we can see exactly what the problem was. There is a range of database issues it could be but the detail will help drill down to what is wrong.
