Quirky things happening on website

I am new to MFP. I wanted to track my macronutrients and this app is great for that. However, I am finding some interesting Quirks when I use the website.

When tracking my water, I put in 2 cups and total shows 20 cups. If I add cups one at a time, it is OK. Another problem, at first I had "-" signs next to the foods I entered so I could delete them if I needed to. Today there are no minuses present. I have to track on my iPhone to erase an entry. Another time I added a food and when the entry went through to Calories were way more than it said when I chose the item.

Is anyone else having this problem? I am using an Apple iMac computer running Big Sur 11.4.