We were experiencing issues with missing tickers/unable to add new tickers from the watchlist and portfolios.
The issues have now been resolved. Users do not need to do anything and it should be corrected when they access these features.
This was in relation to the security upgrade to the site done over the weekend.
As a note, the site must be access using the secure protocol (https://www.stockhouse.com) to access all functionality.
Please see this article for more information on accessing the site in HTTPS: