opt申请收到USCIS邮件两周了 还是不能查到case status正常吗

十月中旬交的OPT申请。10.25收到USCIS的acceptance email。一周前收到纸质reciept。现在USCIS上还是查不到status正常吗？

是Potomac service center的

输入receipt number结果是
Validation Error(s)
You must correct the following error(s) before proceeding:

• My Case Status does not recognize the receipt number entered. Please check your receipt number and try again. If you need further assistance, please call the National Customer Service Center at 1-800-375-5283.