The pass phrase and seed is correct for sure
No, in fact it is not correct.
It wont let me click 'next' when I put in the seed!
because of this. Electrum wallet does not allow you to click Next if your seed is not correct. I am sure now you should know your problem "Inaccurate seed"
For some reason Electrum does not appear as an application, I have to launch from install wizard every time? Is that the problem?
What did you mean? After you install Electrum wallet, you will have wallet icon to open it next times.
As I said above, you can try to test it by creating a new wallet (2FA or not), and try to recover that wallet from seed.
Test the process with correct seed and inaccurate seed to see how the Next button shows up!