Yes, if your mobility is upcoming in 2020 but has been delayed or postponed due to the current situation, you should edit your mobility dates in your OLS profile and enter the actual dates of your mobility.
This will automatically extend your access to your OLS course accordingly. Your OLS language course will be available for 4 months after the scheduled end of your mobility.
Your OLS account remains active for a maximum of 13 months after your first connection to your language course.