Connecting LED strips, Which plugs?
No, you can't mix and match 3528 strips/connectors with 5050 strips/connectors. 

Even within  5050, RGB vs RGBW use different connectors, and there are even W-only strips in the 5050 form factor, which use a different connector still.  

Put more of an effort into shopping, and you should be able to find the right items more easily.  EBay/AliExpress are not necessarily the best places to shop.