Yes. Presumably you meant Mobile Connector, not Wall Connector, right? The mobile unit that has interchangeable pigtails.I did find that it was connected to a 50A breaker. I have an electrician scheduled to replace the LI-30 with a NEMA 14-50.
Other than checking the wire in various capacities, assuming that all checks out as acceptable, it should be as simple as installing the NEMA 14-50, connecting the mobile charger and charging at 32A moving forward?
While it is connected to a 50A breaker, I am still skeptical that it has 8 or 6 gauge wire. That L14-30 30A receptacle could have use 10 gauge (and improperly connected to a 50A breaker). You’ll have to check the wire itself.