Step 1: Under Account —> View Profile
Step 2: Click on “Security” and the rest is history.
You are not kidding about support being offline. —The Epik FAQ page is a 404. GL!
Epik account is extremely limited without 2FA enabled. They did this as a result of the hack.
From my experience, you have to enable it inside your account through the security tab. Although SMS 2FA is not very secure, I think it's safer than Google Authenticator in terms of loss of access. My phone was lost a few months back and I had a tough time getting into the account without that specific device, since Google Authenticator is forever paired with that device only, you may have issues in the future if it is active in your account.
Presumably this is to enable the fast-transfer option out of Epik? If so, I would say do SMS 2FA temporarily. I am having issues staying signed in for more than a few minutes though so expect some delays if you are doing a lot of transfers out.