Good day @Chris Parker ,
WAF v2 is blocking post
This is a know bug in the system which the team working on fixing. You can get more information in this link. Please remember that this system is still in preview and this is not the only bug.
WHILE POSTING THIS ANSWER I GOR+T THIS ERROR AS WELL π
I want to use Redgate SQL Backup to perform the backups of my systems.
Obviously this part is not related to this forum as this is not Microsoft application. If the issue related to third party app like "Redgate SQL Backup", then you should get their help or use a forum which focus on this third party App.
They are not scheduled jobs in SQL Server Agent... the only jobs that are scheduled there are the jobs created by Redgate.
I do not understand your description exactly. First you say that the backup are not scheduled in the SQL Server Agent, but next you say that there are scheduled jobs created by the third party app.
If you want to use the SQL Agent directly then you can do so. You can create new jobs and steps and manage you backup using the SQL Server Agent. You can get more information in this link. As I understand, you use third party app to manage it for you (Usually if you have a few servers then it is simpler to manage directly using the built-in tools).
As said, this forum is not for supporting third party applications like Redgate product, and I am not Redgate experts. I can give you general information which I do not not how it is specifically related to how third party app works behind the scenes.
Note: There are two types of applications for backup SQL Server databases.
The first type are applications which use the built-in SQL Server Agent and basically create jobs and simply provide a rapper management tool.
The second type of third party application for backup SQL Server databases are using Volume Shadow Copy Service (VSS) for the task. SQL Server has a special VSS Writer in order to provide full compatibility with the way the server works.
I have a full tutorial with code which demonstrate how to develop such application using C#. IT is very old post and I am not sure what was changed in the classes since. I did not develop any such application since 2014. You can check if this give you some understanding. This post is in English. In addition I have full lecture about the entire topic which I presented in the Israeli SQL Server User group at Microsoft Offices, but it is in Hebrew so I am not sure how useful it is for you.
... will continue in the comment...