Hello. I bought LRTimelapse 4 today. 
However, the thing that makes me sad is Deflicker, not working properly.

I read FAQs about metadata, but I think there was no error about metadata. I edited the first frame in LR, raising exposure +1.11 and it was shown on LRTimelapse, column 'Exposure 2012'.
However, Deflicker was different.
 I activated Deflicker and there was column 'Deflicker' in LRTimelapse with valid numbers like 0.070. I saved metadata and read metadata in LR. Exposures of other frames were changed well, but I wonder deflicker is not applied to the image. For example, There were adjacent 2 frames with luminosity of 0.209, 0.290. In LRTimelapse, the corresponding values of Column 'deflicker' was 0.034, -0.079. Therefore I expected first frame can be little bit more brighter than second frame after reading metadata in LR, but second frame is still brighter than first frame without any changes. 

Is there any possible solution to my problem?

I'm pretty sure deflicker is working, just check the visual previews before and after deflicker. The pink "visual luminance" curve should be much smoother after deflicker has been applied. And if it's still not smooth enough, you can easily apply one or more "refine" steps. Please check my tutorials to learn about the workflows: http://lrtimelapse.com/tutorial and http://lrtimelapse.com/workflow