Any action questioning the validity of:
1. Any redevelopment plan or amendment to a redevelopment plan;
2. The adoption or approval of that plan or amendment; or
3. Any of the findings or determinations of the agency or the legislative body in connection with that plan,
Ê may only be brought after the adoption of the plan or amendment or within 90 days after the date of adoption of the ordinance adopting or amending the plan.