Help Staking AGI

Hello all

I have recently got into the AGI project and really like the idea behind it. I am now trying to stake my AGI tokens using the metamask wallet. I loaded up the wallet with about 50$ eth to pay gas price. When I try to stake my AGI the metamask tells me a fee of 15$ will be payed so I hit accept and try to stake AGI. After one minute or two the metamask tells me the transaction is declined and I need to pay 100 in gas price. This has happened twice resulting in a loss of 30… Any help or answers would be appreciated.