Thanks for your review. Unfortunately it's not designed to work with SOCKS proxy. Originally we do not support it because if SOCKS has issue, Firefox used to hung and then the only way to make it work it to restart it. However, this problem could be resolved so we can try implement it. Could you please write to our email how do you think we should identify that proxy is SOCKS or HTTPs? Thanks

Thanks for your review, could you please tell us what we should add or change to make your rate five star? =) Thanks

Thanks for your report. We will check it... it's very strange that addon keeps caching capcha image as we tried to make URL random and it should not be cached for sure. It could be some issue with Firefox itself as FF56 is experimental. We will check everything again from our end.