They appear to take the translation of words you click

They remove the assitance mode after a short time, Anyone know why that is, I thought it was both a free and paid subcription site like Duo?

Free accounts are limited to 20 LingQs. If you need more LingQs to test the site, invite friends to join LingQ. For each friend who joins you both get 100 LingQs. Visit the invite page for more details - Login - LingQ.

I hadn’t realised it was a paid app thanks