Google Sheets account linked to Flow keeps disconnecting

[cbm]

I've made a flow to send order details from multiple Shopify stores into a Google sheet. After a few days, I noticed it was missing some order data, so I checked some websites and the linked Google Sheets account was disconnected, even though it was connected and sent data before. Can someone please help me understand why it's doing this and if this is a Flow proper or is the gmail issue? There is no point in sending data if it will just disconnect on its own everyday.