I click to extensions but there is no manage option only modules, plugins, templates languages.

Hello

Thank you for your query.

From the Administration panel, go to Components > Joomla updates > Options. Set the update channel to Joomla Next.

You can check out our blog link below:

https://www.joomshaper.com/blog/how-to-update-your-site-to-joomla-4

This will help you.

Hello Ariba, can you do that for me ?

Can you provide your administrative access? Use the hidden mode to share the log in credentials.

hello

Hello !

Hello Ariba

Hello Ariba !

Yes, thank you for sharing.

Hello !

Hi

Please take a full site backup with Akeeba Backup before updating Joomla.

You can follow the steps here:

https://www.joomshaper.com/blog/backup-and-restore-your-joomla-site-with-akeeba-backup

And, regarding the Joomla update - I am not being able to do with the user access you have provided.

You can follow this detailed documentation for Joomla update:

https://docs.joomla.org/Joomla_3.x_to_4.x_Step_by_Step_Migration

Kindly follow the steps & it will help you, we do not provide support with basic and core Joomla related issues, as per our Support policy:

https://www.joomshaper.com/support-policy