Connector Connundrum

[Smerk]

I've used a lot of diyledexpress pixels and connectors in the past. No problem.
The issue I have now is that I have some items that I acquired a year ago and I don't recall the source. The pixel strings are Holidaycoro connectors. The controller has pigtails that look close-but-not-quite. The attached picture shows male holiday coro connector on the right, and the female from the controller on the left. The pins seem to be the same size/shape, but the plastic won't allow them to connect.

It's certainly cheaper to replace pigtails than strings of lights. Can anyone identify these - specifically the connector on the left.

[superdave]

I'm pretty sure that Holiday Coro connectors are similar/compatible with X-Connect
https://www.wiredwatts.com/learn-connectors

Some of the vendors have adapters to go between, or you can always make your own:
https://www.wiredwatts.com/xchangers

[K-State Fan]

Wiredwatts has a good page on the different connectors

https://www.wiredwatts.com/learn-connectors