1. Does the RUT955 support the Digital Republic sim card?
-> Digital Republic Sim Card is an ISP from Switzerland it would be best if you know what bands they are using for the Mobile connectivity and match the device having these bands.
Here is a link having all the list of devices with the supported bands: Frequency Bands - Teltonika Networks Wiki (teltonika-networks.com)
2. Does the RUT955 also support the eSIM card?
-> RUT955 is able to support this eSIM but it requires the soldering of a special slot. It would be best to contact your sales account manager.