Hello,
My name is Kyle, an independent PHP developer.
I have looked over your required list of fixes and I can have the fixes completed within 24 hours of acceptance.
If you would like, I would be willing to fix the "1. under history.. Undo and delete not work" issue for free before accepting my bid to show my ability to successfully complete the project.
Feel free to contact me to discuss further details if you'd like!
Thanks,
Kyle