I'm very glad the gremlins have left you.

Yes, you can only add one item at a time. The best way to add more than one thing at a time is to use "bulk entry." Have you looked at that yet?

You can choose either "single meal" for something like a salad, and all the ingredients in it (like a recipe) will show on your daily log. You can edit them as you wish.
Or you can choose "multiple meals" to add a day's worth at a time. If you have a typical, for example, bacon and eggs for breakfast, followed by chicken and salad for lunch, followed by steak with broccoli for dinner, after you have added them into your Bulk Entries, all you have to do is click on "Typical Day" or whatever you want to call it, and there it is.
(Forgive me if you already know this...)

HTH!

Roz