Error with key, and adding tags

[RainbowUnicorn (AB-acntr)]

Hi All!
When I'm trying to deploy the ai assistant I'm running into the following error:
(I've removed the subscription intentionally) (Happy to provide full console output or screenshots if required).
"""
Error: Key Vault (Subscription: "____________________"
│ Resource Group Name: "infoasst-abhishekworkspace"
│ Key Vault Name: "infoasst-kv-ixleu") was not found
│
│ with module.functions.data.azurerm_key_vault.existing,
│ on core/host/functions/functions.tf line 75, in data "azurerm_key_vault" "existing":
│ 75: data "azurerm_key_vault" "existing" {
"""

For context, I tried deploying the app, but the did not change the location, and the default GPT-35-turbo was not available in the default region.
I then went into the azure portal, and deleted the resource group it has created by default. When I tried deploying the app again (but changing location to australiaeast first), its now giving me the error above. I imagine its looking for a key it made in the past and remembers it made in the past, but cannot find.

How can I fix this? (effectively, get a clean slate without having to scrub everything in azure and forking a new repo?)

Additionally, I have a shared tenancy on Azure, and the "make deploy" file clearly creates resource groups and other things as needed. How can I add a tag "User : MYNAME" on the resources the deployment creates so that people know that they are controlled by me, and need to ask me before they delete them??

Any help will be much appreciated. Thank you very much for your considerations.