Hi @NonniJo for Level 5299 you need to first remove the metal blocks, then let the virus blocks multiply so you can collect them. Have a look at the example below to see what to do. The video is the old look of the game, but the level is the same 🙂
Can you please post a screenshot of it? Also, look to see if there is a game update in your app store - sometimes level problems can be because the level has changed slightly and you need to update.
wow, I'm glad it got fixed, and thanks for letting me know the whole level is changed! Look for your missing friend in the friend suggestions, hopefully she will come back?