No luck with fs.com BiDi and even CWDM and multi mode SFPs in the 1G slot.
I suspect the problem is similar to what we had with Clearfog units – there’s a particular kernel version that works fine, others do not. The Armbian distro has some SFP related patches for 4.4 kernels, and this made the clearfogs accept a ton of SFPs. Unfortunately there’s no armbian for clearcloud yet, though the kernel/DTBs should still be available.
Will try custom kernels and ubuntu on my units.