@ Jeffww Thanks for the tip, I did bake the wood for an hour and kept an eyer on it to make sure it didn't catch on fire. The sap seemed to melt and then dissapear from the places I observed. I did email Zoomed and this is what they said:
Thank you for contacting us. I have worked with the Mopani Wood here and have never heard of sap in this wood.[censored] This is not “fresh” wood that has been cut; it is root wood (that does not have bark) that is naturally cured in the sun prior to being collected. This wood has the ability to create such a favorable environment in aquatic habitats that bacteria and fungus (most commonly harmless) may flourish.[censored] A slimy looking material may appear to “ooze” from the wood, however it usually is not any organism that is introduced by the wood that you see, just a population that “likes” the environment created by it.[censored] As stated, the “slime” is most likely harmless.[censored] The wood may be washed with hot water and scrubbed to remove the bloom, however this may not prevent it from re-occurring. Please let me know if you have any further questions.
I hope to get another response. I emailed them pictures but I have not received an answer