Is your contact info correct in the WHOIS info for the domain? If the losing registrar is emailing you an "authorize transfer" link, that's important.
Also, if it was registered or renewed within the last 60 days, you'll have to wait before it can be transferred.
If you haven't already, you can still switch the nameservers at your old registrar to DH's and get the hosting setup while you sort the registration out.
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