Thanks to everyone who reported this error to me.
There is a problem with units in the new version of Mediquations, Version 21. I have uploaded a new version that corrects this issue.
This bug only appears if you have any “override global units” set in the Mediquations Settings app. If you do not have any “override global units”, this bug does not affect you.
Here’s a fix in the meantime. For variables with units that you set to “override”, toggle the units buttons, and the correct values will be displayed.
For example, if you have your global units set to US, but you override the weight units to “kg (SI)”, when you select a weight variable, tap “lbs” in the keyboard, then tap “kg” in the keyboard.
Hope this helps. Sorry for the trouble. A new version will hopefully be out on the iPhone app store by the end of the week.