In my view it is highly illogical to make decision to marry someone whom you never met personally and know that person on dating platform.
It is also highly illogical to trust a person, say Mr A who claimed himself as a Scottish (born & raised &living there) but has african accent?? And started to ask you to deactivate your account and focus on him/her only??
These are two common instances that I came across. So please take your time to get to know people and make some due diligence process on him or her BEFORE you are emotionally attached to that person!
All the best on your searching expedition!