Shipstation permanently disables auto-updates (order importing) for a store connection if there is ever any connection error. You have to realize updates have stopped, then manually refresh the connection to fix this. To make it much worse, there is no notification when this happens.
Over the years this has caused me to miss new orders repeatedly, sometimes for days, resulting in late shipments.
Example: Recently my Amazon store connection failed. No specific reason, maybe server maintenance somewhere. Connecting worked immediately when I manually updated: no fix was needed, it was a temporary hiccup, auto-updating orders should not have been turned off. The only way to know orders had stopped importing was to notice a tiny exclamation point in the corner.
There are many easy ways to fix this. Just one of the following would be an adequate fix:
If a store connection fails, send me an automated email so I can investigate and am aware of the issue.
If a store connection fails, show a very clear message in the Shipstation interface warning me.
If a store connection fails, in the left panel for that store, change its text to red, grayed out, etc.
If a store connection fails, just have it retry the connection again every few hours. (don't disable auto-updates)