For the record, even switching back to the previous modem (EC25) doesn’t work anymore. Here is the text message I got from Cricket: “Cricket Free Msg: This device is not eligible for activation on the Cricket network. Cricket’s High-Definition Voice network requires use of a compatible device. For more information go to 3G Network Shutdown | Great Big Network | Cricket Wireless or see your Cricket store rep.”
I’ve talked to customer support, no way to get the service reactivated, doesn’t matter if it is with Quectel EC25 or EP06.
I’ve just switched to TMobile… EP06A is working fine, zero issues. I don’t get carrier aggregation, but I’ll test that again later.