Yes it would affect but sometimes your orthodontist tries to reduce forces to some teeth depending on bone support or maybe they have come off loose. You have deposits that need to be cleaned. You should be worried about them too since the spaces wont completely close if there are deposits inbetween. Kindly take care if your oral hygiene especially with braces

Yes, this will definitely affect tooth movement and chances are that there will be unwanted tooth movement, which might further prolong your treatment time.

The elastic has become loose