Yeah.
Without access to your old email you’ve no way to confirm that you are who you say you are – so if your account was compromised the hacker could easily change your email address and thus lock you out of password recovery.
If you cannot access the old account, drop an email to tech@ as Drac said, they’ll do the verification manually (or should, at least). If you didn’t get anywhere previously it must have unfortunately slipped through the cracks, they’re a small busy team. Just try again.
As a reminder: it’s part of the forum T&Cs to have a valid, current email address on file. So if anyone’s thinking “I can’t be arsed,” be aware that we will lock out any accounts we find that are in violation of this rule until they get in touch to have their details updated.