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I see a contradicting version on the SFP compatibility tool (TMG), it shows the the adapter CVR-QSFP-SFP10G and the SFP GLC-SX-MMD are supported since IOS XE 16.8.1https://tmgmatrix.cisco.com/?npid=188
Is it possible for you to upgrade to 3.3 and verify if this bug is an issue or your configuration.Also you can try pasting your netflow configuration here
Are you configuring the Tengig1/1/1 port instead of the Gig1/1/1 port.I think in the Catalyst 9200, if you use the Tengig1/1/1 port with 1G SFP you have enable and add the configs under Gig 1/1/1 interface.Let me know how it goes
You have remove the configuration for Nexus 2348TQ and downgrade as the Nexus 2348TQ was first supported in NX-OS 7.1(0)N1(1a), so it won't be possible to use it with 5.2(1)N1(6)
