Shifting issues from first to second gear

Good morning,

The first thing I would do is change the fluid and filter. The filter may be clogged not allowing enough fluid into the pump for the valve body. That would also explain the whining. It sounds like a power steering pump when it is starved for fluid.

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

As far as the hard shifting, I would change the fluid first before looking for a broken accumulator spring.

https://www.2carpros.com/articles/automatic-transmission-problems

Roy