We recently enabled State & Country picklists.  Since then, all efforts at deploying changesets have failed.  Doesn't seem to matter what is in the changeset (class, trigger, custom field, etc.), all deployment attempts result in "Code Coverage Failure" error.  The specific error we see is "Details: Average test coverage across all Apex Classes and Triggers is 70%, at least 75% test coverage is required."  If we disable State & Country picklists, the exact same changeset now gets deployed successfully.  Any ideas on why the enablement of State & Country picklists is causing the deployment problem and what we can do to solve the problem?

I'm stuck on step #2 of Einstein Analytics and Discovery Insights Specialist superbadge.  I'm getting this warning while checking the challenge:

The step "Churn Tenure' is in compact form, so the filter values need to be specifed as a minimum and maximum
The static step that feeds has the following the value:
 

"Tenure_Length": {
                "broadcastFacet": false,
                "label": "Tenure Length",
                "selectMode": "single",
                "type": "staticflex",
                "values": [
                    {
                        "display": "High Risk",
                        "value": "1 to 12 months",
                        "min": 1,
                        "max": 12
                    },
                    ...
                ]
            }

I'm using selection binding for min and max values.  The dashboard is correctly filtering:


Any ideas? 
I've tried a non-compact form step where I inject a saql fragment into the query, as well as where I inject min/max values using a range filter serialization...All these efforts end in the same challenge failure message.

Any help/suggesitions are welcome!