The Great Game review for Bold Memberships & Loyalty

I've been using this app for 9/10 months, its ok apart from lots of my customers are randomly having their tags removed from their email accounts. As they need this to access the content they have paid for its having a very bad effect on our reputation. I've spoken to Bold about this before and they haven't found a solution. I've also spoken to shopify and shopify experts on numerous occasions and they all say its the Bold app causing the problem. I'm now forced to look for a better alternative as I can't grow my business knowing that this problem will persist.