Third Partition lost because I merged two first partitions.

[amasoun]

I have windows 10 and I merged to partitions on my secondary hard drive for space.
First one was a Primary partition while second and third were logical
I successfully (or not) merged first two partitions by deleting them both and merged into one primary partition.
Third partition which is now Second, was there working fine before reboot.

But after a reboot, third partition is gone and is shown as Free space in disk management.

And Mini Partition tool

https://imgur.com/a/oSxU2as

Easeus partition manager shows it as a Dynamic disc .

https://imgur.com/a/onFZx4Q