Notion connector fails to enable — "Connector couldn't be enabled" across Chrome and Safari

### MCP server URL or name

https://mcp.notion.com/mcp

### How are you connecting to this server?

From browsing the MCP server directory

### Where does the issue occur?

Other

### When did you last reproduce this?

2026-08-04 14:59 ICT

### Browser and OS

Chrome 150.0.7871.187, Safari 26.6 (21624.4.5.11.5)

### Describe the issue

Attempted to enable the Notion connector following a share/enable request from a team member. The connection failed with an error toast: "Connector couldn't be enabled. You can try again." Tried disconnecting and reconnecting the Notion connector entirely — same error persists.

### Error details

```shell
Connector couldn't be enabled. You can try again.
(No error ID was shown alongside this toast — just the message above.)
```

### Expected behavior

Notion connector should enable successfully after being granted/shared by a team member, allowing normal use within the conversation.

### Additional context

Browser: Chrome 150.0.7871.187, Safari 26.6 (21624.4.5.11.5)
Also reproduced on Claude's macOS desktop app
Steps tried: (1) initial enable attempt via team member's share/request — failed; (2) disconnected Notion entirely and reconnected from scratch — same failure persists; (3) attempted via macOS app instead of browser — same failure persists.

This is something that has worked in the past, but a team member reported the link as broken/disabled today so re-requested.