AT&T 100gb Ciena to Ruckus/Brocade link issues

Hello /r/networking,

I'm helping spin up a client's new AT&T 20gb ASE circuit, that for some reason AT&T said it had to be terminated in 100GB, not 40gb.

We are having link issues to our Ruckus (Brocade) ICX 7650-48F. We have 100GB-LR4 QSFP28 optics, and we're able to link via loopback, and to other 7650's. (not stacking) so I know our configuration works.

AT&T is also able to link via fiber loopback, and swapping the uplink on their optics. Thier gear is a Ciena 8700.

During troubleshooting I pulled their optic out, and it's a Ciena 160-9113-900, 4x25G DWM CFP. It doesn't specifically say 100GB-LR4, but according to AT&T (That keeps saying it's my issue) their software shows it as a 100GB-LR4. I also found some sites calling it a OTU3.

Does anyone have familiarity with Ciena, and can provide some insight into what may be happening?

Thanks!