There is certainly nothing in writing to suggest that FIs holding PPLs may be remunerated, quite the reverse.
See NPA17b:
FCL.205.A PPL(A) Privileges
(a) The privileges of the holder of a PPL(A) are to act without remuneration as pilot in command or copilot of aeroplanes engaged in noncommercial operations.
(b) Notwithstanding the paragraph above, the holder of a PPL(A) may receive remuneration for the provision of flight instruction for the LPL(A) or the PPL(A).
This does, of course, mean that the PPL(A) holder providing such instruction must hold the appropriate EASA instructor 'certificate'
.