I have now received a text of Samsung now as there saying Hi it's Samsung. Please be aware that the rolling out the One UI 7 update has been temporarily paused for further review, and it will resume shortly to Galaxy S24 series, Z Fold6 and Z Flip6 first and expand to other products accordingly. We appreciate your understanding and patience.
It's another reason why it's important to be patient. As rolling out, the update isn't an easy task for Samsung. Hopefully the update reaches to my S23 soon.
You should've received Android 15 on your S24 FE as A friend of mine has S24 Ultra and He got the official Stable One UI 7 on 10th April, 2024, and he also got the latest April Patch 3 days ago.