Hi Spookywooky,
I can’t think what would cause this issue. The logic for the ticker is as follows, when you press the save button:
1) Read the list of stocks the user typed in the box
2) Send them off to our servers to get stock data for each one
3a) If the server gives us data, then use that.
3b) If the server fails to respond, then try again later. Use the old data for now.
3c) If the server tells us that the symbol is invalid, then remove it from the list.
Since obviously the symbol TRON is valid, it looks like our data source is erroneously reporting that it isn’t at times. Our plugin only validates ticker symbols when you are on the admin page and you press save.
Could you let me know when, exactly, you are noticing the issue of TRON not being recognized — Is it happening when you press save, or is it working for some period of time and then vanishing on its own, without trying to interact with it?