You can manually add your papers to your profile in Google scholar so you could put it back yourself - at least while admin answer your question

I have added the paper manually to my profile and I sent an email to them. It seems there is a problem in google scholar system.

Thank you for your valuable answers...

Very important question, so my answer is:

Hope you highest value of h-index through all your published papers, Sir

Regards, Emad

Thank you Emad Kamil Hussein for your answer. The paper was in google scholar for several days, but it is removed since last Wednesday. I have added it to my profile manually. It is may be a technical error and I hop they fix it soon.

I also have a similar problem. A paper disappears recurrently from my Google Scholar profile. I have had to add it manually several times. Annoying!