Changes don”t appear on front end

Hi,
i have corrected some labels on my forms, but those changes never appears on the front end.
I have emptied the cache, but the oldest fields are still there;
I have tried to unistall and re install the plugin, in vain
I also created new Meta Keys to avoid any merge….and the issue is still problematic.
I don’t know how to fix it…

Can anyone help me please?

Thanks in advance !

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