Problem with one skill?
I've strengthened the same skill several times a day for several days (in case it was just very weak) but it never registers as being gold. I can get a perfect twenty on the timed practice and could probably rattle off every phrase in the section (it's only one unit and good practice, but still...).
Is there anything that I can do for this? I know it isn't a big deal but it's so annoying to have it remain "weak" when all the ones surrounding it are gold.
I have the same problem with Passive Participles in my Swedish tree. 4/5 strength, and when I go to strengthen it, it stays rusty.
I've reported it to Duo (other people have this problem as well). I've heard it can be "fixed" by strengthening the skill from another device.