my 2023 return was rejected now when i log in it only trys to start fling 2024 return and does not give a a rejection code or give me any options to fix the 2023 returns

Make sure you are in the same account you used when you filed your 2023 Return.

Scroll down to the bottom of the screen and on the section Your tax returns & documents click on Show.  Click on the Year and Select 2023.

You will need to download the .tax2023 file and switch to the Desktop program.

How to finish a return you started online
https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-finish-a-prior-year-return-that-i-started-in-turbotax-online/01/26322

If you can't get the side menus to open up to access the prior year..... You need to start entering some basic Personal Info in 2024 for the side menu to open up. Just continue a little ways into 2024.