telemach wrote:

Please use caution when using [[ insert third party/owner/application/provider here ]] as (it/he
/she/they) may choose to utilize the update feature provided within Piwigo at its discretion.

maybe something like : this is a major update; we are aware that there are software installers that might auto upgrade but there was no time to test it so for your own safety please contact your hosting provider disable auto options and upgrade manually OR we suggest manual upgrade but there are also software installers that auto upgrade, we have tested it and it is completely safe to upgrade this way if you need to do so

Nah, I like my approach better ;-)