If you need support from Yola please contact us via email@example.com or make use of our live chat service! We are working on a new approach to community-based support and during this transition period we are not adding any new threads to this forum. Many thanks to everyone who has participated over the years and we look forward to unveiling a new peer-to-peer support system soon!
Most likely that your site is still there with your account. Yola don't delete the files unless maybe there is some violation of Terms of Service.
I guess it is most likely that your account ID and password need to be obtained. To do this send a message to Yola Support and hopefully they will be able to resurrect your account. They will need to validate your ownership which is why you need to contact them directly.