Jim M

Sorry, I am a little confused what you mean. There is an integration with a provider for stock photos but not an area in the software you can add to those.

You cannot. You will need to wait till after the version 5 upgrade to upgrade the third party items.
You'll want to ask the author. Typically, you would just install the version 5 counterpart, and the application will handle anything needed.

Either an administrator edited their package or they purchased that many renewals.

You can use the Download Member List feature in ACP -> Members. Alternatively, if you're just sending an email campaign, you can use the Bulk Mail feature as well.
This is not currently possible via the above. You would need to look at these manually, I'm afraid.
Yup, see the Bulk Mail feature above.

Are you flagging the users as spam using our tool? If so, this should likely remove them from being eligible for admin emails, unless you're exporting emails a different way.
Regardless, to mass prune those flagged spammers, you can use the following: https://invisioncommunity.com/forums/topic/484898-multi-selection-of-members-in-the-acp/#findComment-3010129

Looks like guests are attempting to download gallery images which no longer exist.

The language system is designed to be user friendly. Can read about it here: https://invisioncommunity.com/4guides/themes-and-customizations/languages-and-localization_326/translating-using-the-standard-editor-r120/

It will upgrade but you may encounter issues depending on what you changed in the language pack. Language strings will have changed between 4 and 5 so you will need to re-evaluate it.

The time for the platform to apply version 5 files to your system is relatively instant. You just need to keep watching /admin/upgrade for when you can run the upgrader.
The latest release. At time of writing this, that is 5.0.10.
Yes, we have automatic backups but typically, we can resolve any issues for you.
It is of the whole database.

Different views per device are not possible at this time. If the block you're using can exist in multiple places on the same page and has the visibility option, you can duplicate the block and show the view you want to the proper device. However, if you're looking for a more streamlined solution, you will want to create a suggestion in our Feedback forum.

As mentioned, you would want to rename your default "Member" group to "New Member" and then name your "New Member" to "Member" then use group promotions to sort out those who should be promoted from "New Member" to "Membe"

Do you mean custom profile fields? If so, no. It would just remove the data if you remove the profile field.

Yes, for the areas which the moderator moderates. If it is specific to a forum, you would need to configure that in that area.

I have converted this to a ticket so we can assist you directly.