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Been stuck in this one for a while. Any hint would be appreciated, thanks!

https://pasteboard.co/lyk3LnCFMuA9.jpg

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.25....74.37....59948756....1.8..24.....1.....64..2.9....1974.349....71.371...9..

In r78c3 a naked pair 26 because candidates 58 cannot be there.
So r7c12 must be 58 naked pair.
So r5c1=2 is only possibility for a 2 in column 1.

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*------------------------------------------------*
| 16   2   5   | 39    38   1389 | 68   7   4    |
| 16   3   7   | 24    248  148  | 68   5   9    |
| 9    4   8   | 7     5    6    | 13   23  12   |
|--------------+-----------------+---------------|
| 57   1   39  | 8     367  359  | 2    4   67   |
|#2578 58  239 | 34569 1    3459 | 35   368 678  |
| 578  6   4   | 35    37   2    | 135  9   178  |
|--------------+-----------------+---------------|
| 58-2 58 *26  | 1     9    7    | 4   *26  3    |
| 4    9   26  | 2356  2368 358  | 7    1   2568 |
| 3    7   1   | 2456  2468 458  | 9    268 2568 |
*------------------------------------------------*

Your PM diagram is incomplete, so it's hard to see exactly where you are, but you should be able to get to the above.

There is a naked pair (26) in the cells marked * which removes 2 from r7c1 and the 2 in r5c1 (marked #) is a hidden single in Column 1. The puzzle should solve with singles from there.

Leren