I have the free trial currently and it was running moonsweepers very slow/laggy, I was wondering if there was anyway to speed it up? 

Moon Sweepers is a Windows download rather than a browser game, so a lot depends on your PC. First I'd lower the graphics settings or resolution in the game's options if it has them. If you're on a laptop, plug it in and make sure Windows runs the game on the dedicated GPU: under Settings > System > Display > Graphics you can add the game and set it to High performance.

It's also worth figuring out whether it's a low frame rate or network lag, since it's online co-op with lobbies of up to 16 players. If it only gets choppy in a busy lobby, try a smaller one and see if that changes anything. If none of that helps, the comments on the game's page are probably the best place to ask, since the dev would know what hardware it actually needs. Hope you get it running smoothly, that toothbrush deserves a decent frame rate.