I too did not sign the new contract, and noticed it had disappeared from my account. So I contacted my account rep, and was informed that Tesla had withdrawn the new contract. They will honor the original contract price.
My project is scheduled to commence tomorrow, so the close proximity of the work may have had something to do with their decision. As if on cue, they dropped off the brackets and the underlay this morning. They start stripping the roof off tomorrow.
There are still long-term concerns about the viability of Tesla's energy business, and these recent practices only heighten those concerns, so I hope they will do the right thing and take care of all of those who were under contract at the time of the announced changes to their pricing methodology.