Just as info for others looking for eSIMs, I tried KeepGo in recent weeks in Europe. It was not a good experience. Installing the eSIM was unproblematic (but the mixed or incomplete instructions are guaranteed to cause problems for some customers), but then it went downhill. The Europe eSIM "line" (KeepGo's terminology) actually rarely connected to the listed networks in a number of the countries I visited, so that was useless when I had chosen the eSIM because of a specific local need for part of the trip (poor coverage by other networks). In Germany I got no useful connection (no data, despite all settings being correct) on one eSIM, then on a alternative eSIM they offered I got notional "Edge" coverage which was useless except for email/chat at best. In France I got no network connection at all on the first eSIM, while the replacement was more useful. In Luxembourg the automatically selected network gave no data, while manual selection of another network was useful.

It was a massive waste of time and energy. Support was moderately helpful, with variable response times, and the number of variables in troubleshooting are so high that miscommunication is almost a given (network choice, whether the network accepts the connection, correct APNs, having to use the SIM Toolkit to select operator type sometimes, etc etc). The only positive was the offer of an alternative eSIM product which worked a little better in France but was almost useless in Germany.