Scapper only records first 20 items

Web Scraper version: 0.4.1
Chrome version: 76.0.3809.100
OS: macOS High Sierra 10.13.6

Sitemap:

{
  "_id": "gyg_click",
  "startUrl": [
    "https://www.getyourguide.com/s/?q=Tallinn&customerSearch=true&p=1"
  ],
  "selectors": [
    {
      "id": "card",
      "type": "SelectorElement",
      "parentSelectors": ["_root"],
      "selector": ".activity-card",
      "multiple": true,
      "delay": "20000"
    },
    {
      "id": "title",
      "type": "SelectorText",
      "parentSelectors": ["card"],
      "selector": ".activity-card-title",
      "multiple": false,
      "regex": "",
      "delay": 0
    },
    {
      "id": "click-more",
      "type": "SelectorElementClick",
      "parentSelectors": ["_root"],
      "selector": ".activity-card",
      "multiple": true,
      "delay": "1000",
      "clickElementSelector": ".load-more .btn",
      "clickType": "clickMore",
      "discardInitialElements": "do-not-discard",
      "clickElementUniquenessType": "uniqueText"
    }
  ]
}

Error Message:

No

Hi, the site can actually be navigated using page numbers, e.g.
https://www.getyourguide.com/s/?q=Tallinn&customerSearch=true&p=1
https://www.getyourguide.com/s/?q=Tallinn&customerSearch=true&p=2
https://www.getyourguide.com/s/?q=Tallinn&customerSearch=true&p=3

So I just changed your start url to
https://www.getyourguide.com/s/?q=Tallinn&customerSearch=true&p=[1-3]

And I removed your click-more selector. The new scrape will result in duplicates, but these are easily removed by using Excel's Remove Duplicates. After removing dupes, I got 58 lines. I used these settings for scraping:
Request interval (ms)
2500
Page load delay (ms)
3600

Modified sitemap:

{"_id":"getyourguide","startUrl":["https://www.getyourguide.com/s/?q=Tallinn&customerSearch=true&p=[1-3]"],"selectors":[{"id":"card","type":"SelectorElement","parentSelectors":["_root"],"selector":".activity-card","multiple":true,"delay":"20000"},{"id":"title","type":"SelectorText","parentSelectors":["card"],"selector":".activity-card-title","multiple":false,"regex":"","delay":0}]}