Problem/Bug BuycraftX prints Unable to connect to API.

So, I have been having this problem for a while now, and it is starting to get really annoying. Every 20 minutes, BuycraftX keeps printing this:

Code:

[15:19:05 ERROR]: [BuycraftX] Unable to connect to API. Please check that your secret key is correct.
[15:39:06 ERROR]: [BuycraftX] Unable to connect to API. Please check that your secret key is correct.
[15:59:06 ERROR]: [BuycraftX] Unable to connect to API. Please check that your secret key is correct.
[16:19:06 ERROR]: [BuycraftX] Unable to connect to API. Please check that your secret key is correct.
[16:39:07 ERROR]: [BuycraftX] Unable to connect to API. Please check that your secret key is correct.
[16:59:07 ERROR]: [BuycraftX] Unable to connect to API. Please check that your secret key is correct.
[17:19:07 ERROR]: [BuycraftX] Unable to connect to API. Please check that your secret key is correct.
[17:39:07 ERROR]: [BuycraftX] Unable to connect to API. Please check that your secret key is correct.
[17:59:08 ERROR]: [BuycraftX] Unable to connect to API. Please check that your secret key is correct.

Is there any way to fix this? Also, don't go saying "Oh, all you need to do is reset your secret key" because I have done that about 5 times now.