Hey @Filipebarcan, welcome to the MetaMask community! 
It looks like you have an insufficient funds error, and it is likely because of the typo in your Gas price. There is a comma when there should be a period - 7,7 should be 7.7
Hey @Filipebarcan, welcome to the MetaMask community!
It looks like you have an insufficient funds error, and it is likely because of the typo in your Gas price. There is a comma when there should be a period - 7,7 should be 7.7