You have devices from different Swimmingly versions (I.e. 8.x.x and 9.x.x) and they won't work together, update all devices
Given That
I am in the middle of "the huddle" before my swim meet, and am receiving an error message of 'incompatible version'
I Want To
Know what action I need to take
So That
I complete the huddle successfully!
Solution
Update the devices (most likely the Scorekeeper's iPad) that are out of date
Scenario 1: ALL devices attempting to huddle with the Scorekeeper are seeing this message
This means your Scorekeeper is on an incompatible version. Close the app on this device, connect to any internet connection, and download the latest version of Swimmingly.
Details on device compatibility and Swimmingly version
As a best practice, have all devices attempting to huddle confirm that they see the current version (10.x.x) prior to attempting to huddle:
Scenario 2: SOME devices huddle successfully by SOME attempting to huddle with the Scorekeeper are seeing this message
This means SOME devices are on an incompatible version (probably last year's version). Close the app on those devices, connect to any internet connection, and download the latest version of Swimmingly.
Details on device compatibility and Swimmingly version
As a best practice, have all devices attempting to huddle confirm that they see the current version (10.x.x) prior to attempting to huddle: