We released version 4 of the WpStream plugin back in September 2021 and striven to maintain compatibility with customers running version 3 so that they can enjoy continued use of the product.
As maintaining such compatibility requires time and effort on our side, we decided to discontinue the older version starting Jan 15th 2022. After that time, plugins older than v4 will no longer function as intended.
Please upgrade your plugin now to avoid any disfunctionalities.