There is no factory reset. In windows, depending on the version, this may be called refresh. https://support.microsoft.com/en-us/help/17085/windows-8-restore-refresh-reset-pc
Explore ALL of the settings tree (1) pull down notifications (2) tap sprocket (3) explore there is likely a “feature” trying to help you comply with the insanity of Green Tyranny. There is no “saving” electricity unless you have a magical bucket imbued with this antiscience capability.
There is no fixing the kind of damage from bending the phone - likely you sitting on it. Parts must be replaced. Find your local phone fixing shop and bring $150.
Is the client device correctly configured to communicate with the printer? If yes, and you installed the bloatware, you should be able to see ink levels from your computer. (1) Did you use only drivers? (2) Did you use a generic PCL driver? (3) Did you install the evil bloatware from canon? Is the client device connected via wifi, USB, or network shared USB?
You need twice as much free space as there is content to encrypt. (1) Back up your user data (2) factory data reset (3) encrypt device (4) THEN add back your apps and userdata
Unless you ordered the kind of magnets with snap together force that can break bones I would not worry about magnet damage. Find a replacement battery on amazon.