August 2019
I’ve completed the registeration as required but I haven’t
received the promise reward of 100gems
August 2019
If you registered the first time they tried this when it went horribly wrong then you won't get anything as they already gave you a smaller number of gems.
If you didn't already register then complain to EA HELP CENTER (below) and they will probably give you your 100 gems eventually.
February 2020
Yup me too .... Registered email but NO 100 Gems rewarded !