Dropbox: Stops after one scroll

How to?
#1

Stops after one scroll. Anyone have any clues?

{
  "_id": "dropbox2",
  "startUrl": ["https://www.dropbox.com/events?date=22-8-2020"],
  "selectors": [{
    "id": "tr1",
    "type": "SelectorElementScroll",
    "parentSelectors": ["_root"],
    "selector": "tr.mc-media-row",
    "multiple": true,
    "delay": 2000
  }, {
    "id": "date",
    "type": "SelectorText",
    "parentSelectors": ["tr1"],
    "selector": "div.mc-media-cell-text-detail",
    "multiple": false,
    "regex": "",
    "delay": 0
  }, {
    "id": "span",
    "type": "SelectorHTML",
    "parentSelectors": ["tr1"],
    "selector": "span",
    "multiple": false,
    "regex": "",
    "delay": 0
  }, {
    "id": "link",
    "type": "SelectorLink",
    "parentSelectors": ["tr1"],
    "selector": "a:first",
    "multiple": false,
    "delay": 0
  }]
}
#2

Added the following $100 bounty to find help with this issue.

Thanks, Ryan