My CPC patent electronic digital certificate is missing because of the reinstallation system.

It is correct to submit an opinion statement to apply for re-acquisition. If it is an individual, you need a copy of your ID card. If it is an agency, a copy of the qualification certificate of the agency that needs to be stamped with the official seal shall be submitted together.

After accepting the application, the Patent Office will cancel your previous certificate and issue a new digital certificate. If you download it, you can only log in to the patent electronic application network with your login name and password, and then download it again in "Certificate Management". It will show that your previous certificate status is "cancelled" and your new certificate status is "normal". You can download it. Please pay attention to save.

Just applied for re-acquisition, I don't know how long it will take. I hope my answer is helpful to you.