Hi and welcome to JA. Ray here to hep you tonight.
You can appeal on the basis that there was no valid contract and the necessary elements were not present.
To prove that a contract was created, [name of plaintiff] must prove all of the following:
1. That the contract terms were clear enough that the parties could understand what each was required to do;
2. That the parties agreed to give each other something of value [a promise to do something or not to do something may have value]; and
3. That the parties agreed to the terms of the contract.
[When you examine whether the parties agreed to the terms of the contract, ask yourself if, under the circumstances, a reasonable person would conclude, from the words and conduct of each party, that there was an agreement. You may not consider the parties’ hidden intentions.]
If [name of plaintiff] did not prove all of the above, then a contract was not created.