WordPress Post ID overwritten when I create a new post?

OK, this is very odd and I am totally unsure how to problem-solve this.

I am using WordPress Pods Custom Post Types.

For the last two years it has been working great.

This is the error:

1 > I “Add New” post, and WP as you’d expect, gives it an ID of let’s say 1234.

2 > I then “Add New” for another post and save it as draft, and it OVERWRITES the last ID of 1234 rather than create a new ID.

It feels like there’s strict caching? I’ve deleted cookies, etc etc but still this happens.

I also often get this error:

Sorry, you are not allowed to edit this post.

Any idea what else I can do here?