Userupgrades page is empty

[rigarus99]

Hello

I had installed the Monetize addon (1.1 patch 1 or some) and everything worked fine for a long time. (that was a longer time ago)
And then for arround a two weeks i had tryd to update it but it didnt work and has crashed some things.

Then i got into FTP and manually deleted the monetize folders in "scr" and "js" folders.

After that i tryd to put files from an backup to get it work again but no chance..

Everytime i try to get into my created user upgrades in admincp (Users/-User Upgrades) -
like for example"free" / "premium" or some else i got into an empty page and also when i try to create new upgrades i face an empty page.

ErrorException: Template error: [E_USER_WARNING] Template admin:user_upgrade_edit is unknown
src/XF/Template/Templater.php:682

#0 [internal function]: XF\Template\Templater->handleTemplateError(512, '[E_USER_WARNING...', '/home/mukru/...', 682)
#1 src/XF/Template/Templater.php(682): trigger_error('Template admin:...', 512)
#2 src/XF/Template/Templater.php(1611): XF\Template\Templater->getTemplateData('admin', 'user_upgrade_ed...')
#3 src/XF/Template/Template.php(24): XF\Template\Templater->renderTemplate('user_upgrade_ed...', Array)
#4 src/XF/Mvc/Renderer/Html.php(48): XF\Template\Template->render()
#5 src/XF/Mvc/Dispatcher.php(458): XF\Mvc\Renderer\Html->renderView('XF:UserUpgrade\\...', 'admin:user_upgr...', Array)
#6 src/XF/Mvc/Dispatcher.php(440): XF\Mvc\Dispatcher->renderView(Object(XF\Mvc\Renderer\Html), Object(XF\Mvc\Reply\View))
#7 src/XF/Mvc/Dispatcher.php(400): XF\Mvc\Dispatcher->renderReply(Object(XF\Mvc\Renderer\Html), Object(XF\Mvc\Reply\View))
#8 src/XF/Mvc/Dispatcher.php(58): XF\Mvc\Dispatcher->render(Object(XF\Mvc\Reply\View), 'html')
#9 src/XF/App.php(2344): XF\Mvc\Dispatcher->run()
#10 src/XF.php(512): XF\App->run()
#11 admin.php(13): XF::runApp('XF\\Admin\\App')
#12 {main}

array(4) {
  ["url"] => string(28) "/admin.php?user-upgrades/add"
  ["referrer"] => string(48) "https://this-is-the-website/admin.php?user-upgrades/"
  ["_GET"] => array(1) {
    ["user-upgrades/add"] => string(0) ""
  }
  ["_POST"] => array(0) {
  }

Can anybody help me out ??