When I create the boxes using the default toolbar on the left, PagePlus calls them "Quick Rectangle". The textboxes it calls "Standard Text Frame".

As far as I can tell they aren't locked. When I right-click and choose Arrange, one of the choices is "Lock Objects".

I'm not using layers.

Oh--I think I've narrowed it down. I see that it's possible to unwittingly convert Quick Rectangles to Shaped Text Frames by inadvertently typing within them. Then the behavior happens apparently depending what the Shaped Text Frame is touching. I have an example that I just converted (on purpose), and if I slide it over to touch another Shaped Text Frame, it goes to the top and won't allow standard text frames to appear on top of it. But if I slide it away from any other Shaped Text Frame, it does allow standard text frames to appear on top of it.

I don't see away to deconvert Shaped Text Frames back to Quick Rectangles, but I can go through and recreate them, making sure not to inadvertently type within them. But just out of curiosity, is there a way to make these Shaped Text Frames allow standard text frames to appear on top of them even if they are touching another Shaped Text Frame?

I have a PagePlus X9 project with lots of boxes and lots of textboxes. Sometimes the boxes will go to the front and then never allow anything to be arranged in front of them.

Once the problem happens, it doesn't help to tell the box to go back one, or to go to the back. It just stays at the front.

I've tried replacing the boxes but often the same thing happens to the new box.

Any suggestions?

I've published 10 Kindle books using PagePlus for the covers, and all is well there. I just started doing print editions of them and have done 3 paperbacks. In all cases, the cover has turned out darker than expected, and maybe a little color-shifted too. Two of the paperbacks are live and I can see the difference just by clicking back and forth between the Kindle edition and the paperback edition on their Amazon page. They look the same in PagePlus.

The third one isn't live yet, but like the first two I have a proof copy, and like the proof copies for the first two it is too dark.

The covers have to be submitted to Kindle Direct Publishing in CMYK, and I make sure to set to CMYK in PagePlus when creating the cover file to submit.

I asked about this issue on the KDP forum, and learned about gamut. Apparently the colors I have chosen were out of gamut for print.

If I understand correctly, there's no science for choosing the in-gamut print color which appears closest to an out-of-gamut screen color, which is why the software chooses something unsatisfying. Apparently only our eyeballs can make a satisfactory choice.

After reading about this and watching some Youtube videos, I understand that Adobe helps with this by giving you a color picker for print that only offers in-gamut colors. So you can eyeball what looks closest to the out-of-gamut color.

Is there anything PagePlus can do to help me choose the right color?

BTW I'm using PagePlus X9. Some of the Kindle covers were created in earlier versions but I'm using X9 for the paperbacks.

Here's an example of the difference. It's a children's book about foxes, and I found a color on the web that was said to be the color of fox fur. That worked fine for the Kindle edition, but the KDP paperback is brown:

https://i.postimg.cc/zLgmXtn6/Compare-cover-color-Kindle-vs-KDP-Paperback.png