Yes I agree.  To fix the second problem it could be either partially clogged or the PVA may have absorbed too much water.  Just 2 days on the back of the printer is sometimes enough to "ruin" the filament.   To unclog a BB core read about hot and cold pulls.  There are instructions on the display of what to do and guidance.   To restore PVA read about how to do that.  I use the heated bed to restore a spool of PVA.  It can take just hours or days depending how much filament y