I create a new gig when I publish the gig upgrade option show. I upgrade many times but the option is to stay here. see this picture and give me suggestions.
You should make sure that your gig is according to Fiverr TOS. There must be something wrong while creating your gig. You must create the gig according to the Fiverr rules and regulations.
You may refer to these articles:-
If your problem is not solved, feel free to contact Fiverr customer support. They will definitely help you.