Install site kit by Google but Analytics keeps showing connect with service

I successfully installed site kit by Google this plugin, but which Analytics has not been able to complete the link, the progress bar has been showing that connecting to the service is never completed, I have tried uninstalling and reinstalling, resetting and linking again, all to no avail, how do I fix it? This is too difficult for a non-professional IT person. Can anyone help me to solve this issue? Thanks a lot

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