# Investigating Connectivity Issues

- Provider: [Customer.io](https://down.guide/customerio)
- Level: confirmed
- Impact: Partial outage
- lasted 2h 42m
- started 2026-06-13 21:18 UTC
- id: DWN-bc802d43a9
- Official page: https://stspg.io/35rllzbqp13g

## Updates from Customer.io
### 2026-06-13 21:18 UTC: investigating
We are aware of an issue affecting access to our web application. Customers may encounter ERR\_CONNECTION\_REFUSED when attempting to access the UI.
At this time, we are not aware of any impact beyond UI accessibility. Message processing and delivery continue to operate normally.
Our team is actively investigating the issue and working to restore full service as quickly as possible.
We will provide updates as more information becomes available.

### 2026-06-13 22:21 UTC: identified
The team has identified the issue and is actively working on a fix

### 2026-06-13 23:46 UTC: monitoring
A fix has been implemented and the systems are recovering. 
We are monitoring UI for any other issue.

### 2026-06-14 00:00 UTC: resolved
This incident has been resolved.

---
down.guide reads providers' official status pages every minute and adds its own evidence, always labeled. Free, no account. Agents: MCP at https://down.guide/mcp, REST at https://down.guide/api/v1, feeds at https://down.guide/feed. Built by Sazabi (https://sazabi.com/?utm_source=down-guide&utm_medium=markdown).