Allen Crabbe is the highest-paid Net, and he’s paid to shoot. So far he hasn’t. And the rest of Brooklyn’s season may hinge on when he finally starts. Or if he ever starts. “Listen, he’s struggling a little bit,” coach Kenny Atkinson admitted of Crabbe as the Nets prepared for Tuesday’s game at San Antonio. “I feel like he’s getting decent looks. I thought he attacked the rim [in the last game], which I liked. Maybe that can get him going a little more, getting to the rim. “I don’t think he’s driving close-outs as well as he should. They’re closing out on him. He’s got to dribble, and [Saturday] he did it — he did it driving. Listen, the guy’s a 42 percent career 3-point shooter. We’re going to keep trusting him and trusting it.” It’s actually a career 40.1 percent, but so far Crabbe hasn’t even come close to giving Brooklyn that. Or value on his $19.3 million salary, the highest on the Nets and fifth highest in team history. After the Nets inked Crabbe to a huge four-year, $83 million offer sheet in 2016, they saw Portland match it and the sweet-shooting wing go on to finish second in the entire league in 3-point shooting at 44.4 percent. Brooklyn traded for him this summer, but so far hasn’t gotten his renowned shooting stroke. Crabbe has hit just 14-of-53 from 3-point range over his last seven games, his .364 from deep his worst since 2014, before he became a NBA regular.