Well Filza is a Jailbroken file manager but, they've also released a Non-Jailbroken version its called FilzaEscaped.
If you want it \/ (It may restart your deice the first time you open it)
You can get it on TweaBox from your iDevice, its on Apps > Tbox Apps. Scroll down until you find the 3 Filza links, click/tap on the first one (FilzaEscaped without anything after it) and it will prompt you to install it. Its named "<FilzaEscaped> [Fire emoji] T W E A K B O X [fire emoji]" and tap install.
Make sure that PvZ 2 is closed while doing the procedure
It will now start installing, Now you go to Settings > General > Profiles & Device Managment then you'll see a section called "Developer App". Now right under it you'll see a Wierd Nammed thing, tap on it and press Trust then Trust again, after that you can open FilzaEscaped. (There will be 2 ads within FilzaEscaped)
Now you can press the bottom right corner, it should look like two windows. After that just wait 5 seconds to dismiss the Activation, now press the bottom left corner button. Its A folder with an A that has a circle around it. It'll open "Apps Manager" then select PvZ 2. You can do the instructions on the first page or go into Library >Application Support>No_Backup now download the file (<-- Link) and it'll say open in ex: FilzaEscaped. If you dont have filza escaped as an option you can press more, then on the bottom menu scroll to the left and choose "Copy to FilzaEscaped". It will bring you to filza with the file. Press Edit in the top right corner the select the hacked pp.dat. Press Copy on the bottom, now press the two windows button and go to the "No_Backup" page. Press the clipboard on the bottom left and press "Replace". Open up PvZ 2 and it should be there
Sorry if its not that good because I dont use Filza much