Local Copy – JetPack Identity Crisis

Hi,

I’m opening this topic because even i’ve read and try some things i cant find a solution.

I ve made a copy of a website in production and installed it in a VirtualMachine on my localhost.

The goal is to test update and some change in local before change anything in the online site.

I dont find the way to set JetPack to stay in Safe Mode enable or to create a new connection in the local site.

I ve check the real OnlineSite and jetpack dont give any message about Identity Crisis (he just want to update).

From the local copy :
I ve read and try :
1. https://jetpack.com/support/safe-mode/
>>but clicking stay in safe mode or create a new connexion dont work.
2. https://jetpack.com/support/development-mode/
>> i ve try define( ‘JETPACK_DEV_DEBUG’, true ); but my site hostname have period and i ve to define the JETPACK_DEV_DEBUG constant, but i dont know how and where (which file? jetpack.php? default-constant.php?)
>> ive not try the add_filter( ‘jetpack_offline_mode’, ‘__return_true’ ); because it s not written in which file to add the filter.

The locale VM work under Debian10 with :
PHP7.4, Mysql5.6, WordPress 5.8.4, JetPack 10.7

I would prefer not upgrade anything because i create this local copy to let the site owner make his test in virtualbox before upgrading the onlinesite.

So my answer is : How to enable the offline mode in the Local Copy to have it the more similar possible to the real OnlineSite ?

In anyway in the local copy i can use the WordPress dashboard but i ve the JetPack Message in all windows…

I ve an other problem with the redirection of the local pages but ill maybe open a new topic if i dont find solution.

Thanks.

(Those Topics dont help me to solve :
https://www.ads-software.com/support/topic/jetpack-safe-mode-something-went-wrong/
https://www.ads-software.com/support/topic/how-to-solve-jetpack-identity-crisis/)

The page I need help with: [log in to see the link]