Hi Eascards,
Here is errors:
1 On delete your button you invoke "calf" datasource that's "update" service.
2 In "detete" service mapping you have wrong link to "id" parameter. Should be from "itemId" to "id".
3 In your delete service you have wrong but should be:
{{database_url}}/collections/Calf_data/{_id}
I've fixed your APP.
Now "delete" service is work.
Regards.
Thank you sooooo much for your help. I obviously couldn't have done it with out this great team!
Shoot! Somehow I messed something up and it isn't working. I made it a custom component so that I could move it to a popup to conform that the item should be deleted. I feel so bad. I'm sorry
Do you still need Appery.io support assistance?
yes
Debug your app. What exactly has stopped working?
Please try to recreate as Yurii suggested.
Tried that but didn't work. Checked the console. It said 405 (not allowed). I clicked the link on the right. It brought me to jquery code it put the curser in the exact same spot as this screen shot. 
Anyway Yurii could go in and work his magic again?
???
Hello -
Is your app is still shared with Appery.io support?