Hi JeanneAdil,
Thanks for your reply.
Regarding "Care of C/O" problem. I got the issue.
In the mailing address section of I-824 I filled it same as my physical address with my name while In the instruction I found " If your Mailing Address in different than Physical Address then fill this".
So I believe this is just for sending this notice Which I received. There is nothing to worry about it because it is only related to delivery of the mail.
Regarding Online Account notification. If we file any form manually by mail through Lockbox Facility and we have already USCIS online account. So will it show in online account itself or we should request USCIS to show me my case here just like I-130 which I filled online.
Let me explain the main purpose of this request, if there is any action occurred on the case, we receive instant email notification and all the documents ( I-797c, or approval notice) is easily downloaded from online account at any time to check the action rather than to wait for a mail to come at home.
One more question: My I-797 contains this line "if we determine you must submit biometrics, we will mail you for Biometric appointment Notification." So is it mean Biometric will be required? What if I am outside US then is it possible to submit Biometric through Embassy ?