I am having issues with adverts popping up everytime im on online. specifically dealster and shopndrop

Peter, For removal info have you 'googled' remove dealster & shopndrop ads?..
No AV product is capable of providing you with 100% protection although AVG are always working 24/7.
Have a look @ these 2 articles…
[1] (https://support.avg.com/SupportArticleView?urlname=What-to-do-when-I-suspect-an-undetected-file-is-infected)              
[2] (https://support.avg.com/SupportArticleView?urlname=Why-AVG-did-not-detect-a-virus)       
AVG would recommend to start with uninstalling all unknown/unused programs and browser addons.
AVG Guru

Peter, For removal info have you 'googled' remove dealster & shopndrop ads?..
No AV product is capable of providing you with 100% protection although AVG are always working 24/7.
Have a look @ these 2 articles…
[1] (https://support.avg.com/SupportArticleView?urlname=What-to-do-when-I-suspect-an-undetected-file-is-infected)              
[2] (https://support.avg.com/SupportArticleView?urlname=Why-AVG-did-not-detect-a-virus)       
AVG would recommend to start with uninstalling all unknown/unused programs and browser addons.
AVG Guru