I hope you’re having a great day 🙂
Actually, after Elementor’s latest update (v2.1.1), there are many bugs related to the repeater ( + Add Item) option have been reported to them, on the other hand, we’re working from our side to fix those bugs and get this option to work without any problems in the next update (v2.4.0), so stay tuned!!
Concerning Premium Grid widget, we’re currently working on finishing the PRO version of Premium Addons for Elementor which will be released so soon 😉 , but it would be great to have a live chat to get your suggestions to improve the grid widget, you can send us a private message on our Facebook group: Leap13
Have a great day!!,