Hi, also relevant to OP.
I am looking into making a custom connector for mine as an experiment because with the pins broken it won't work with the replacement connectors because there is nothing to connect them to other than the previously mentioned triangular pad (+)
It is possible that a magnetic connector made using ultraviolet cured resin and including the needed
micro-jumpers would bring back functionality and even allow USB to work.
My design so far is a 4 pole micropin based cable with internal diode to prevent accidental damage, connected to a custom charger that includes a current/OV limit and other features the simpler units lack.