Oliver POS acts as a reflection of your live WooCommerce store, but if you're running any security or firewall plugins in WordPress (e.g. WordFence) they may block Oliver from connecting to your website.
In these cases, our servers will need to be whitelisted to allow syncing with your WooCommerce database.
To allow the connection, head to your security/firewall settings and whitelist the following:
34.170.41.197