I'm having major issues with JetPack after upgrading from the previous version to the latest version. Upon upgrading from the dashboard initially, my whole back-end went blank. I ended up logging in via FTP and deleting the JetPack directory and when I logged back in to my site, I could access the Dashboard once again. I logged a support call and received a response from Chris who suggested that I delete my current version, download the latest version and upload a fresh copy via FTP. Before I did that however, I installed the plugin from my dashboard again and this time it worked. When I looked at the enabled services I noticed some were deactivated. I started activating them again, but right after activating the grammar module, blank pages again. I hit back and disabled the module and now it seems to work again. I considered living without that module but then also noticed that my sharing module doesn't update the changes I make within that module and I had to subsequently disable that too. I'm concerned that there may be other issues as well which I have just not picked up on yet.
I have since followed the advice and deactivated, deleted and re-uploaded JetPack, but the issues remain.
I'm desperate to get this working again, and would appreciate any feedback or suggestions.
My website is http://www.winstuff.co.za