Have some problems with the connection er707-m2 to sg3428x by cat8 with sfp module. tested sfp in pc speed works. up and down. when i add the sfp module to the switch speed go's to 600/700mb upload ma

Dear I have the set: er707-m2 v1 1.2.2 sg3428x v.13 1.30.0 oc200 2xEAP245 v4.0 1.3.0 Odido ISP Ont 1,2.5,5/10g out to ER707-M2 Wan er707-m2 Wan 2,5Ghz cat6e rj45 W