Limited_cardinality issues while writing to db

Hey all,

For a while we have getting errors while saving new measurements with the message that our limited_cardinality has been exceeded.
This happend at the same time we were having some problems with our credit card payments in Azure (where we are also paying for InfluxDB).
Is there a way for us to know if this timing was a coincidence or if our plan somehow got limited due to payments which were paid later as expected?

When using the influxdb.cardianity() function we get the following result.

0	0	bucket1
0	0	bucket2
0	1015530	bucket3
0	0	bucket4

When we then have a look at the amount of tag values we get this:

0	4	_field
1	1	_measurement
2	0	_start
3	0	_stop
4	1295	tag1
5	15676	tag2

I can not find any information online about the limits of cardinality, but our numbers don’t look that extreme to me.
Has anybody ran into this problem before? This is currently blocking us very much…