Conflict between IThemes Security 7.3.3 and Two Factor Authentication (Premium)

TFA works properly when IThemes Security 7.3.3 is disabled. When IThemes Security 7.3.3 is enabled, I get an incorrect password error after applying the TFA code from Authenticator. Any login without TFA enabled works with both plugins activated. I added IThemes Security after TFA which has been working for some time. Rather than turning off TFA, I will disable IThemes Security until the conflict is resolved.