I believe I did download from Electru(dot)org. I also believe I saw the Multi-signature wallet option. Could have seen 4 options thought they were 3.
I think you made a typo and you downloaded electrum from electrum.org. There is no website hosted at Electru(dot)org.
Since you bolded the second option, are you saying you have a 2FA wallet?
Anyway, it doesn't matter you have a 2FA wallet or a standard wallet and you should be able to increase the fee of the transactions that are flagged as RBF and have been made by yourself.
Again, if the transaction has been flagged by electrum, it's RBF enabled.
Did you right-click on your unconfirmed transaction and check if you see any option for increasing the fee there?