Welcome Alexander2100 -
The free version still scans (usually only a quick scan is required) and detects then removes most known infections -
The paid version offers "real time" protection as well as your regular scans would but it picks most up earlier -
As many companies will only remove malware if you pay extra - Malwarebytes is not the same -
Please follow the advice above by LonnyJR and post a MBAM scan log (a quick scan, about 5-8 mins, is all that you need) -