Drop down issue

Cant figure out what im doing wrong, trying to go through drop down menus and then scape titles. First dropdown option selected, then it stops. what im doing wrong?

Url: https://www.plantasur.com/en/products/air-purification-systems?items_per_page=100

Sitemap:
{"_id":"testdropdown","startUrl":["https://www.plantasur.com/en/products/air-purification-systems?items_per_page=100"],"selectors":[{"id":"dropdown","type":"SelectorElementClick","parentSelectors":["_root"],"selector":"div#content-area","multiple":true,"delay":"4000","clickElementSelector":"div > div[class^='form-item'] > select#edit-jump--4 > option:nth-child(n+2)","clickType":"clickOnce","discardInitialElements":"do-not-discard","clickElementUniquenessType":"uniqueText"},{"id":"title","type":"SelectorText","parentSelectors":["dropdown"],"selector":"h2 a","multiple":false,"regex":"","delay":0}]}

any thoughts on this would be much appreciated