Raise a ticket with Strava customer service via their website for advice. Strava by default should not let you create a new account with the same e-mail address, you can test this by attempting to create a third account with the same e-mail, it should prevent you and say "This email address is already taken ". If it does, it's likely you used different credentials the first time around, did you sign up via facebook/google, or enter an email address manually as your username perhaps? Try logging in using the different services.
I can certainly relate to you're username
I thought it strange that I had two accounts on the same email and this morning I logged onto the new account via my mobile but with chrome rather than the app and checked "request desktop site"
So I could view all tools etc.
There I managed to delete the new account as suggested. This was synced with my Google account.
Once deleted I tried my other email accounts to reset password, the first was not recognised then the 2nd, a sky email was
What made me think Gmail was my account email is that all strava messages get sent to that gmail address including the strava welcome which is archived
I have managed to log into my old account but only from old password reset emails to Gmail and strangely through pressing the reset password link which takes me to my old account and logged in . I've sent a sky email password reset but it doesn't work. So I'll have to have another look when I get chance and maybe contact them as you suggest
So now I'm confused even more