Erase wrong (and OK ) Contact impossible

Hi

I’m under Linux 5.6.14-desktop-2.mga7 (x86_64) and have Jitsi Desktop 2.10.550 6.mga7 (X86_64)

At the first start I entered a wrong Sip address to one of my contacts.

Then impossible to erase it. The same if I want to other one. !

After un installation of Jitsi and Java-1.8.0-openjdk and re installation those wrong and good contact are still here !? and impossible to remove

Has someone an idea where and how is stocked the “MetaContactList” ?