Libra Colour Kobo Libra Colour Issues

Hi, I bought a Kobo Libra Colour a few weeks ago, and I love it...when it works.

After about a week, the device becomes almost unusable and I have to factory reset it to get it to work again. Pocket articles will stop syncing altogether, and the 'My Google Drive' and 'My Dropbox' items in the 'More' menu disappear as well.

Does anybody know how to fix this? I don't think I want this device if I have to do this once a week. Sometimes, it only lasts a few days before I have to factory reset it again