Trolls & Treasure Importing Error

Hi, I purchased the Everbloom Games "Trolls & Treasure" mod (£7.99) but when I try to download the mod I keep getting an error when it is "Importing" saying that the mod couldnt be downloaded. I have deleted several of my worlds to ensure I have enough space and the playstation has enough storage space. I have also tried to Restore Licences on my PlayStation 4, (Settings > Account Management > Restore Licences).