I have purchased and completed 2 bonus skills for Spanish - Flirting and Idioms. My tree show that I have one more slot available but I don't have any skills showing in the Lingot Store.
Can someone tell me when the next bonus skill becomes available and what it is? Also, what other items become available in the store at higher levels (I am currently level 10)?
There is a Christmas bonus skill offered around Christmas time. I don't have it, but know of others that do. This is the bonus skill for your last slot.
There aren't any more Bonus Skills after that one, and this is quite a shame as many Duolingo users have lingots to waste. These could be put to use by buying more Bonus Skills.