Thank you all ill try that

@d0ugmac1 ok i got it is there somwhere on this page to find the code to add it again in the omada app.

Thanks for the answer that is it i am a beginner wit oc300 omada world And i did nothing no backup. The oc300 is on vacation home. When i whent there tried to connect to the modem i was still 9ffline...

Hello I need to re ad oc300 becaus ihave changed mine modem the only thing after checking the code and numbers are gone so can not read the code or scan it with phone. What is the alternative.