Marc

You cannot delete a locked language, as it will be locked due to being your default language pack. If you edit another pack and set that as default instead, then the one you wish to delete would no longer be locked.

Im not sure if you are asking about the server requirements, or asking about the space there. If you are asking about the server requirements, you should go to Support in the top right of your admin CP and you will see the recommendations that you dont currently have shown on that page.
With regard space, you really shouldnt be manually removing anything from the database. If you are hitting limits on your server environment, you really should look into updating that to something with more space. 

If you are looking reset it completely (a completely fresh install) you would delete all files and folders, delete your database, then reinstall as you did originally

This has been done for you

I see this has now been resolved on your ticket, so you should be good to go.

Take a look in System->Site Features->Integrations, which has the locations you are looking for.

Sorry, Im not sure what you mean there. You cant import code from pages to other applications

We would need to look further into this for you, however the access details on file appear to be incorrect or missing. Could you please update these details by visiting your client area, selecting the relevant purchase, then clicking "Review/Update Access Information" under the "Stored Access Information" section. 
Patches are seen in the support section of your admin CP, and are separate to main upgrades
 

I am not seeing this on your install at present. This is the "inc tax" string. The only way you can really remove that is to not have tax on there or theme it out of your theme

I see this has now been resolved. Please let us know if you have any further issues.

The problem is when it converts the color to a light grey scale, the image you are using is converted to near all white

Thank you for letting us know. I have added this to our internal bug tracker

It was actually set to the same as your main URL, so I have gone ahead and reset that for you. 

I have corrected this for you.

This issue has been resolved in 4.7.0 which has recently been released. Please upgrade to that version to resolve this, and of course, let us know if you are still seeing any issues.

You actually have it set up like that. So they could pay for another renewal again, and even do it again after that if they wanted. It would just continue to extend it
 

I have corrected this for you. Seems to have been an issue with caching

We need the error message itself, rather than just the stack trace. I suspect you are missing the mbstring PHP extension. As mentioned, you need to ensure you have used the requirement checker
Edit: I see you have uploaded that now. Indeed you are missing the mbstring php extension, which is a requirement

This issue has been resolved in 4.7.0 which has recently been released. Please upgrade to that version to resolve this, and of course, let us know if you are still seeing any issues.

This issue has been resolved in 4.7.0 which has recently been released. Please upgrade to that version to resolve this, and of course, let us know if you are still seeing any issues.

This issue has been resolved in 4.7.0 which has recently been released. Please upgrade to that version to resolve this, and of course, let us know if you are still seeing any issues.

This issue has been resolved in 4.7.0 which has recently been released. Please upgrade to that version to resolve this, and of course, let us know if you are still seeing any issues.

This issue has been resolved in 4.7.0 which has recently been released. Please upgrade to that version to resolve this, and of course, let us know if you are still seeing any issues.

Are you referrring to the activity stream? If so, you can alter this in your admin CP by visiting System->Content Discovery->Streams, then clicking on 'Activity Stream Settings' in the top right

This issue has been resolved in 4.7.0 which has recently been released. Please upgrade to that version to resolve this, and of course, let us know if you are still seeing any issues.