Nami Wallet Transaction Failed

I keep getting this issue and I have now realised it is because I am using Nami on two computers. If I add it on one, it works fine. If I go to computer number 2, it asks me to add it, then works. It continues to work until I go back to comp 1 and it asks for the collateral again, I have no idea if I am getting these 5 ada back each time, but I try to stay on one now, That may, or may not help…