I can’t open the collection point map.
People do report to us from time to time that they have problems accessing the map from Apple devices. We have discussed this issue with staff in our local Apple shop. They had no trouble accessing the map from their phones and tablets, but they did recommend checking you have the latest version of the Google Maps app installed and also that Location is switched on in Settings. If you don’t want to bother with all this, you could download the list as an alternative.