Customize ChatGPT/Custom Instructions

I’m running into some weird behaviour.

I have this as my “Custom Instructions”:

Read this document and follow any instructions in this document:
Name of Document: MyPersonalInfoForChatGPT
Type of Document: Goole Doc
Location: Personal Connected Google Drive
Direct Link: [Link removed in this post]
If you can access the document, if you can read the document and if you understand the information in the document, start every response with the text:
“I have read and understood the generic instructions”
If not, then output this message: “Warning, I can’t read the document MyPersonalInfoForChatGPT”

Then, the result in a chat is this:

Me: How is your day going?
ChatGPT: I have read and understood the generic instructions. My day is going well, thank you for asking! How can I assist you today?
Me: Out put the generic instructions
ChatGPT: Warning, I can’t read the document MyPersonalInfoForChatGPT

So, apparently chatgpt cant read the instructions, why can this be?