17 R5, Amazon battery replacement, install issue

Removed bulging battery from laptop purchased end of 2018. Guess I was lucky on battery life. Purchased a replacement from Amazon. Having a difficult time getting the battery cable end to fit in the slot on the motherboard. Can anyone provide me with some tips? I am seriously afraid of breaking something if I push too hard. I did start it up using the AC adapter without the battery connected, and it appears to work as it immediately had 3 updates which completed without a problem. However, I would like to have a working battery. Would appreciate any tips, advice or suggestions please. Thank you.