When you head over to your project, to ''Users and roles'' and press ''Edit Defaults'' you should just be able to change the project lead. May I ask what browser and version of JIRA you are using?
Also; How long is your project key/name? It could be due to this;
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Hi Atlassian Community! My name is Shana, and I’m on the Jira Software team. One of the many reasons this Community exists is to connect you to others on similar product journeys or with comparabl...
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