No logical steps found the sequel - A rare given

For some reason, the computer solver has no idea what to do, can you help? Normal sudoku rules apply. Place the digits 1-9 once each in every row, column and 3x3 box. Digits in a dotted cage without repeat sum to the total in the top left corner of the cage (if given). Digits on a grey line must read the same forwards as backwards. Digits on a purple line must not repeat and form a set of consecutive digits in any order. Cells separated by a black dot has one digit double the other (1:2 ratio). Clues outside the grid sum the digits along the indicated diagonal, digits may repeat. No negative constraints.