If you need support from Yola please contact us via firstname.lastname@example.org 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!
As Phillip mentions, we do offer a completely free package. You will be prompted to pay however if you try to publish to a custom domain or access other features only offered as part of our premium hosting plans. What precisely are you trying to do when you see the upgrade message?