This is probably an awful experience for your first time buying Blockland, we have just recently added a new feature called Shadows and Shaders in August and there may be some bugs due to this. However, I have not experienced any like this.
You can read about the update more in this link:
http://forum.blockland.us/index.php?topic=203515.0Another note, when users ask to post your console.log, upload the whole thing, not just the screenshot. It is completely safe, the only thing it gives out are you PC specs such as the processor, the rest are things from the game. To upload it, hit additional options when replying or writing a post and then attach the file.
I hope your experience with Blockland gets better, it is a very polished game, don't let this one glitch get to you :D