2013 Sorento Transmission issues

[Cliff C]

Hi there. 2013 Sorento Ex luxury. 260,000km. Have it 4 years now...Always works great. Lately, transmission shifter stiff and seems to cluck when shifting into gear. Also, sometimes the gear letter on the instrument cluster disappears. Also seems slow to drop gear when floored. Anybody have these issues before? Gonna check fluid but don't think thats the issue. Maybe engine/transmission mount broke? Any thoughts? Thankls