Hello, we're using OSTicket as a reservations system and this is the current versions we're using:![image]()

The reason we haven't updated the osTicket version is because we've made a few tweaks ourselfs and it would revert everything to default.
So a few things we need help with are:
1- System generally slow retrieving and sending information. We're hosting the system in a windows environment and xampp and the server has enough resources and never struggles. Would we see better results hosting it in a linux machine?
2- When a "post ticket" is made it redirects us to the ticket list. We would like it to stay on the ticket instead of redirecting us.
3- Even though we disabled the timing to automatically logoff an agent it sometimes logs off anyways, generally while posting a ticket.
4- Only 2MB max to attach a file. Can we increase the limit?
5- Sometimes our users merge a ticket by mistake. Im pretty sure unmerge is not possible and they just need to be careful but still leaving this here in case you guys have an unmerge option?
6- The search system is probably what we would really like to solve. Currently the search system works like this:
If you search "Van Dam" it will look for ANYTHING that has "Van" or/and "Dam". I am aware there is an advanced search but it wasn't really helpful.
Can we tweak it a little bit so it could search the whole expression?
7- Is there currently and option to copy tickets?
Well this might be a lot but it would be really good if someone could help me with some of these points.
Thank you in advance