I see some issues: first of all, what is with the two "surround" (srnd) instruments? Better change those back to stereo. Second, both your output 1-2 and your master out are clipping, even though you've dropped them below zero (which you shouldn't do - the mix should simply stay below zero - good mixing should leave headroom on all channels). Put both sliders back at 0, then select all other sliders and drop those simultaneously until your outputs no longer clip - on the automated tracks you may have to drop the automation too. Also, delete the 4 auxes named inst 1 to inst 4 on the right, they have no function.
I hope that changing the srnd strips back to stereo will give you back the plugin slots on your output 1-2 channel strip, they are now missing and they shouldn't be. I also hope that changinmg those will make your project bounce again, though it may be that there are even more issues that the mixer doesn't reveal.
Then bounce by clicking the bounce button on the output 1-2 strip - there should no longer be a bounce button on the master strip (that is there now because you've got those two srnd instruments)