Transfer RFE后Approve了，至今没拿official notice

不知道地里有没有类似情况的。之前大概是７月份开始搞的transfer PP，８月３号RFE了。８月13号邮件收到了approve的通知。但是至今仍然没有收到纸质notice,问过律师好多回了，不知道是不是他case太多的原因，他总说他没收到就应该等。而且他说，如果寄出了网上status会显示。我的网上status一直都是:


Case Was Approved
On August 13, 2018, we approved your Form I-129, Petition for a Nonimmigrant Worker, Receipt Number WACXXXXXX,  We will mail your approval notice. Please follow the instructions in the notice. If you move, go to www.uscis.gov/addresschange to give us your new mailing address.