TrigpointingUK

I managed to find preference on my app. Problem is for a fleeting moment I saw Trig Icons on a map. Now all I have is a blank screen. No map but have downloaded the database! Help

Forgive my ignorance, I am creating, or trying to create a mini Scavanger Hunt that I thought would be good to include trig points. Because the participants are all over the UK. I was hoping I could download a map of the Trig Points that are "good" so they can photograph themselves at that ...