Timer ends Epiry not setting Stock Status

Hello, when using this timer (which I’ve replaced our other two plugins, a timer and a expiry/countdown plugin) unfortunately, at the end of the timer, the Expiry setting for Stock Status does not appear to do anything. The stock status we want is Out of Stock, however the stock status remains. Likewise, I have tested the opposite, manually setting the stock status to Out of Stock, and setting Expiry option to set Stock Status to ‘In Stock’, however nothing appears to happen after the timer depletes. I am successful in using the “Display message” and other expiry actions, however the Stock Status expiry setting does not appear to have an affect on the Stock Status.