Our app saves our data in a meta field.
Shopify limits the number of characters in a meta field to 65,535 characters.
If you go over 65,535 characters you won’t be able to save the product and you will get a “Couldn’t save. There are too many options” error.
If you are using a lot of instruction product options you can try removing some of the text so you can add more options and save the product.