Track armed but no audio signal in channl strip

Issue: Track armed but no audio signal in channel strip

I have been recording in this project for a couple days with no issues, and today here is the problem:

-Logic track is armed to record audio

-The track's input is set to Mic/1 corresponding to the correct vocal mic from the interface (Apollo Quad)

-The computer is "seeing' the audio interface, I have rebooted both computer and interface numerous times

--Audio preferences in Logic checked and sees the Apollo.

--the mic input levels are registering nicely on the Apollo audio interface, but not on the channel strip, nothing.....no signal coming in.

--Playback of all tracks are fine

--Recording midi instruments is fine, works like it should

Here's what I have done so far to try to solve it:

-Unplugged and replugged in the fire wire from the Apollo to the Mac to make sure the connection good (and rebooted)

-Unlocked all tracks and even disabled the locking function in the "configure track header"

-I have tried different input channels from the Apollo and the ADAT, (Opto 8) into the Logic channel strip, still no signal levels regardless which number input I choose..

- Made sure this is an audio track and not a midi track. Audio tracks I recorded on yesterday without a problem could not be recorded on today

--Copied the project and tried to record audio with the copy of the project, no luck.

--Opened a brand new project and created just one audio track to see if i could record, still not audio signal on the channel strip.

-- I tried recording anyway to see if just the metering light was malfunctioning but no sound recorded.

I inserted a lot of plug ins today getting ready to mix, but disabled most while trying to solve this issue....I'm stumped!

Any ideas what might be going on?

Thanks.

Logic Pro X 10.0.7

Mac Book Pro OS X 10.9.5

Processor 2.3 GHz Intel Core i7

Memory 16 GB

Interface: Apollo Quad & Opto 8Logic Pro X 10.0.7

Mac Book Pro OS X 10.9.5

Processor 2.3 GHz Intel Core i7

Memory 16 GB

Interface: Apollo Quad & Opto 8