Did you share your map? Also, (in AGOL) in Settings on the map (and possibly the layers too, I can't remember) make sure the checkbox "Use in ArcGIS Collector" is checked near the bottom of the settings page.
Yes that is checked. I even went on arcgis Online and created a brand new layer and did a whole new feature and create a new web map from a template I was going off of. In the feature layer, I added a new field and created a domain list for sign type and went in and added the correct labeling and symbols for that main field I am working on in the map for that layer and it gave me the same error code. Does anyone have any info on this? Same code loaded the invalid argument