Does Appraisal Contingency remain active till removed by buyer in writing?

[hector3123]

For a home purchase in California, we agreed to have a 14-day appraisal contingency. The appraisal took 20 days instead, and came $40K lower. Does the contingency still remain intact until removed in writing? Or because we could not have the appraisal report in 14-days we no longer have the right to negotiate the price