"Connect with CloverWoo is not available for this environment and region"
Use your own Clover keys instead (see Connect your Clover account). Payments and sync both work that way.
Products appeared twice
Something imported the Clover catalogue into a site that already had those products. Bin the copies, then link the originals from Clover → Link Products, and switch on "Only sync linked products" so nothing is created on either side again.
Stock looks wrong
Open Clover → Link Products. Any row marked "Linked · check stock" has two different counts; pick the right one and both sides are set to it. Remember Clover counts per item, so a size can only count separately if Clover has an item for that size.
A card was declined
The order notes carry Clover's exact reason. Most declines come from the bank, not the plugin.
Something is not syncing
Clover → Logs shows every sync with its result, and Clover → Dashboard shows the queue. Failed jobs retry on their own, and you can retry them by hand from the dashboard.
Still stuck? Email support@cloverwoo.com, or ask the chat on this site. Every plan includes free setup help.