LOL, TDAmeritrade will allow a customer to sell their shares so they are still tradeable, but will not allow online buys or sometimes, even call in buys.
The DTC changed the settlement process for a number of issues and TDAmeritrade is one of the brokers who do not want to use that process. Another is Zecco.
Other brokers have no problem trading the DTC chilled stocks online.
TDAmeritrade's refusal to accept online buy orders for EPGL has nothing to do with EPGL reconciling with brokers.