2017 Standard Edition Upgrade Key
Install in Help -> Enter Upgrade Key (use upper/lower case exactly as below):

    Full Name: WXtoImg Standard
    Email Address: your email address
    Upgrade Key: TYLQ-KGKT-7M73-U86U-EAQ2


2017 Professional Edition Upgrade Key

    Full Name: WXtoImg Professional
    Email Address: your email address
    Upgrade Key: YKC7-6LXP-SL92-SZWT-D4HX


https://www.wxforum.net/index.php?topic=31494.25
Username      :Kevin Schuchmann 
WXtoimg KEY :CGHZ-PP9G-EAJZ-AWKK-NDNX

^^^^  this seems to works even after 2017 without clock change